Delete dead code (#11431)

32 files changed, 0 insertions, 786 deletions

diff --git a/src/mscorlib/System.Private.CoreLib.csproj b/src/mscorlib/System.Private.CoreLib.csproj
index 945738e3a6..426ae7d601 100644
--- a/src/mscorlib/System.Private.CoreLib.csproj
+++ b/src/mscorlib/System.Private.CoreLib.csproj
@@ -344,9 +344,7 @@
     <Compile Include="$(BclSourcesRoot)\System\MissingMemberException.cs" />
     <Compile Include="$(BclSourcesRoot)\System\NonSerializedAttribute.cs" />
     <Compile Include="$(BclSourcesRoot)\System\Number.cs" />
-    <Compile Include="$(BclSourcesRoot)\System\OperatingSystem.cs" />
     <Compile Include="$(BclSourcesRoot)\System\ParseNumbers.cs" />
-    <Compile Include="$(BclSourcesRoot)\System\PlatformID.cs" />
     <Compile Include="$(BclSourcesRoot)\System\ResId.cs" />
     <Compile Include="$(BclSourcesRoot)\System\RtType.cs" />
     <Compile Include="$(BclSourcesRoot)\System\RuntimeArgumentHandle.cs" />
@@ -592,9 +590,6 @@
     <Compile Include="$(BclSourcesRoot)\System\Runtime\Serialization\SerializationInfo.cs" />
   </ItemGroup>
   <ItemGroup>
-    <Compile Include="$(BclSourcesRoot)\System\Runtime\Remoting\ObjectHandle.cs" />
-  </ItemGroup>
-  <ItemGroup>
     <Compile Include="$(BclSourcesRoot)\System\Text\DecoderNLS.cs" />
     <Compile Include="$(BclSourcesRoot)\System\Text\DecoderBestFitFallback.cs" />
     <Compile Include="$(BclSourcesRoot)\System\Text\DecoderExceptionFallback.cs" />
diff --git a/src/mscorlib/src/Microsoft/Win32/Win32Native.cs b/src/mscorlib/src/Microsoft/Win32/Win32Native.cs
index 8145a9537c..94e990ad80 100644
--- a/src/mscorlib/src/Microsoft/Win32/Win32Native.cs
+++ b/src/mscorlib/src/Microsoft/Win32/Win32Native.cs
@@ -93,7 +93,6 @@ namespace Microsoft.Win32
     using System.Security;
     using System.Text;
     using System.Configuration.Assemblies;
-    using System.Runtime.Remoting;
     using System.Runtime.InteropServices;
     using System.Threading;
     using Microsoft.Win32.SafeHandles;
diff --git a/src/mscorlib/src/System/Activator.cs b/src/mscorlib/src/System/Activator.cs
index 34c6ea5874..d11739b826 100644
--- a/src/mscorlib/src/System/Activator.cs
+++ b/src/mscorlib/src/System/Activator.cs
@@ -16,7 +16,6 @@ namespace System
 {
     using System;
     using System.Reflection;
-    using System.Runtime.Remoting;
     using System.Security;
     using CultureInfo = System.Globalization.CultureInfo;
     using Evidence = System.Security.Policy.Evidence;
@@ -113,47 +112,6 @@ namespace System
             return Activator.CreateInstance(type, false);
         }
 
-        /*
-         * Create an instance using the name of type and the assembly where it exists. This allows
-         * types to be created remotely without having to load the type locally.
-         */
-
-        [System.Security.DynamicSecurityMethod] // Methods containing StackCrawlMark local var has to be marked DynamicSecurityMethod
-        static public ObjectHandle CreateInstance(String assemblyName,
-                                                  String typeName)
-        {
-            StackCrawlMark stackMark = StackCrawlMark.LookForMyCaller;
-            return CreateInstance(assemblyName,
-                                  typeName,
-                                  false,
-                                  Activator.ConstructorDefault,
-                                  null,
-                                  null,
-                                  null,
-                                  null,
-                                  null,
-                                  ref stackMark);
-        }
-
-        [System.Security.DynamicSecurityMethod] // Methods containing StackCrawlMark local var has to be marked DynamicSecurityMethod                                                  
-        static public ObjectHandle CreateInstance(String assemblyName,
-                                                  String typeName,
-                                                  Object[] activationAttributes)
-
-        {
-            StackCrawlMark stackMark = StackCrawlMark.LookForMyCaller;
-            return CreateInstance(assemblyName,
-                                  typeName,
-                                  false,
-                                  Activator.ConstructorDefault,
-                                  null,
-                                  null,
-                                  null,
-                                  activationAttributes,
-                                  null,
-                                  ref stackMark);
-        }
-
         [System.Security.DynamicSecurityMethod] // Methods containing StackCrawlMark local var has to be marked DynamicSecurityMethod
         static public Object CreateInstance(Type type, bool nonPublic)
         {
@@ -185,221 +143,5 @@ namespace System
             // Skip the CreateInstanceCheckThis call to avoid perf cost and to maintain compatibility with V2 (throwing the same exceptions).
             return (T)rt.CreateInstanceDefaultCtor(true /*publicOnly*/, true /*skipCheckThis*/, true /*fillCache*/, ref stackMark);
         }
-
-        static public ObjectHandle CreateInstanceFrom(String assemblyFile,
-                                                      String typeName)
-
-        {
-            return CreateInstanceFrom(assemblyFile, typeName, null);
-        }
-
-        static public ObjectHandle CreateInstanceFrom(String assemblyFile,
-                                                      String typeName,
-                                                      Object[] activationAttributes)
-
-        {
-            return CreateInstanceFrom(assemblyFile,
-                                      typeName,
-                                      false,
-                                      Activator.ConstructorDefault,
-                                      null,
-                                      null,
-                                      null,
-                                      activationAttributes);
-        }
-
-        [System.Security.DynamicSecurityMethod] // Methods containing StackCrawlMark local var has to be marked DynamicSecurityMethod
-        public static ObjectHandle CreateInstance(string assemblyName,
-                                                  string typeName,
-                                                  bool ignoreCase,
-                                                  BindingFlags bindingAttr,
-                                                  Binder binder,
-                                                  object[] args,
-                                                  CultureInfo culture,
-                                                  object[] activationAttributes)
-        {
-            StackCrawlMark stackMark = StackCrawlMark.LookForMyCaller;
-            return CreateInstance(assemblyName,
-                                  typeName,
-                                  ignoreCase,
-                                  bindingAttr,
-                                  binder,
-                                  args,
-                                  culture,
-                                  activationAttributes,
-                                  null,
-                                  ref stackMark);
-        }
-
-        static internal ObjectHandle CreateInstance(String assemblyString,
-                                                    String typeName,
-                                                    bool ignoreCase,
-                                                    BindingFlags bindingAttr,
-                                                    Binder binder,
-                                                    Object[] args,
-                                                    CultureInfo culture,
-                                                    Object[] activationAttributes,
-                                                    Evidence securityInfo,
-                                                    ref StackCrawlMark stackMark)
-        {
-            Type type = null;
-            Assembly assembly = null;
-            if (assemblyString == null)
-            {
-                assembly = RuntimeAssembly.GetExecutingAssembly(ref stackMark);
-            }
-            else
-            {
-                RuntimeAssembly assemblyFromResolveEvent;
-                AssemblyName assemblyName = RuntimeAssembly.CreateAssemblyName(assemblyString, false /*forIntrospection*/, out assemblyFromResolveEvent);
-                if (assemblyFromResolveEvent != null)
-                {
-                    // Assembly was resolved via AssemblyResolve event
-                    assembly = assemblyFromResolveEvent;
-                }
-                else if (assemblyName.ContentType == AssemblyContentType.WindowsRuntime)
-                {
-                    // WinRT type - we have to use Type.GetType
-                    type = Type.GetType(typeName + ", " + assemblyString, true /*throwOnError*/, ignoreCase);
-                }
-                else
-                {
-                    // Classic managed type
-                    assembly = RuntimeAssembly.InternalLoadAssemblyName(
-                        assemblyName, securityInfo, null, ref stackMark,
-                        true /*thrownOnFileNotFound*/, false /*forIntrospection*/);
-                }
-            }
-
-            if (type == null)
-            {
-                // It's classic managed type (not WinRT type)
-                Log(assembly != null, "CreateInstance:: ", "Loaded " + assembly.FullName, "Failed to Load: " + assemblyString);
-                if (assembly == null) return null;
-
-                type = assembly.GetType(typeName, true /*throwOnError*/, ignoreCase);
-            }
-
-            Object o = Activator.CreateInstance(type,
-                                                bindingAttr,
-                                                binder,
-                                                args,
-                                                culture,
-                                                activationAttributes);
-
-            Log(o != null, "CreateInstance:: ", "Created Instance of class " + typeName, "Failed to create instance of class " + typeName);
-            if (o == null)
-                return null;
-            else
-            {
-                ObjectHandle Handle = new ObjectHandle(o);
-                return Handle;
-            }
-        }
-
-        public static ObjectHandle CreateInstanceFrom(string assemblyFile,
-                                                      string typeName,
-                                                      bool ignoreCase,
-                                                      BindingFlags bindingAttr,
-                                                      Binder binder,
-                                                      object[] args,
-                                                      CultureInfo culture,
-                                                      object[] activationAttributes)
-        {
-            return CreateInstanceFromInternal(assemblyFile,
-                                              typeName,
-                                              ignoreCase,
-                                              bindingAttr,
-                                              binder,
-                                              args,
-                                              culture,
-                                              activationAttributes,
-                                              null);
-        }
-
-        private static ObjectHandle CreateInstanceFromInternal(String assemblyFile,
-                                                               String typeName,
-                                                               bool ignoreCase,
-                                                               BindingFlags bindingAttr,
-                                                               Binder binder,
-                                                               Object[] args,
-                                                               CultureInfo culture,
-                                                               Object[] activationAttributes,
-                                                               Evidence securityInfo)
-        {
-#pragma warning disable 618
-            Assembly assembly = Assembly.LoadFrom(assemblyFile, securityInfo);
-#pragma warning restore 618
-            Type t = assembly.GetType(typeName, true, ignoreCase);
-
-            Object o = Activator.CreateInstance(t,
-                                                bindingAttr,
-                                                binder,
-                                                args,
-                                                culture,
-                                                activationAttributes);
-
-            Log(o != null, "CreateInstanceFrom:: ", "Created Instance of class " + typeName, "Failed to create instance of class " + typeName);
-            if (o == null)
-                return null;
-            else
-            {
-                ObjectHandle Handle = new ObjectHandle(o);
-                return Handle;
-            }
-        }
-
-        public static ObjectHandle CreateComInstanceFrom(String assemblyName,
-                                                         String typeName)
-        {
-            return CreateComInstanceFrom(assemblyName,
-                                         typeName,
-                                         null,
-                                         AssemblyHashAlgorithm.None);
-        }
-
-        public static ObjectHandle CreateComInstanceFrom(String assemblyName,
-                                                         String typeName,
-                                                         byte[] hashValue,
-                                                         AssemblyHashAlgorithm hashAlgorithm)
-        {
-            Assembly assembly = Assembly.LoadFrom(assemblyName, hashValue, hashAlgorithm);
-
-            Type t = assembly.GetType(typeName, true, false);
-
-            Object[] Attr = t.GetCustomAttributes(typeof(ComVisibleAttribute), false);
-            if (Attr.Length > 0)
-            {
-                if (((ComVisibleAttribute)Attr[0]).Value == false)
-                    throw new TypeLoadException(SR.Argument_TypeMustBeVisibleFromCom);
-            }
-
-            Log(assembly != null, "CreateInstance:: ", "Loaded " + assembly.FullName, "Failed to Load: " + assemblyName);
-
-            if (assembly == null) return null;
-
-
-            Object o = Activator.CreateInstance(t,
-                                                Activator.ConstructorDefault,
-                                                null,
-                                                null,
-                                                null,
-                                                null);
-
-            Log(o != null, "CreateInstance:: ", "Created Instance of class " + typeName, "Failed to create instance of class " + typeName);
-            if (o == null)
-                return null;
-            else
-            {
-                ObjectHandle Handle = new ObjectHandle(o);
-                return Handle;
-            }
-        }
-
-        [System.Diagnostics.Conditional("_DEBUG")]
-        private static void Log(bool test, string title, string success, string failure)
-        {
-        }
     }
 }
-
diff --git a/src/mscorlib/src/System/AppDomain.cs b/src/mscorlib/src/System/AppDomain.cs
index 02a473c993..edd53b22da 100644
--- a/src/mscorlib/src/System/AppDomain.cs
+++ b/src/mscorlib/src/System/AppDomain.cs
@@ -25,7 +25,6 @@ namespace System
     using System.Collections.Generic;
     using System.Threading;
     using System.Runtime.InteropServices;
-    using System.Runtime.Remoting;
     using System.Reflection.Emit;
     using CultureInfo = System.Globalization.CultureInfo;
     using System.IO;
@@ -258,18 +257,6 @@ namespace System
         private static extern APPX_FLAGS nGetAppXFlags();
 #endif
 
-        [DllImport(JitHelpers.QCall, CharSet = CharSet.Unicode)]
-        [SuppressUnmanagedCodeSecurity]
-        private static extern void GetAppDomainManagerType(AppDomainHandle domain,
-                                                           StringHandleOnStack retAssembly,
-                                                           StringHandleOnStack retType);
-
-        [DllImport(JitHelpers.QCall, CharSet = CharSet.Unicode)]
-        [SuppressUnmanagedCodeSecurity]
-        private static extern void SetAppDomainManagerType(AppDomainHandle domain,
-                                                           string assembly,
-                                                           string type);
-
         [SuppressUnmanagedCodeSecurity]
         [DllImport(JitHelpers.QCall, CharSet = CharSet.Unicode)]
         private static extern void SetSecurityHomogeneousFlag(AppDomainHandle domain,
@@ -328,54 +315,6 @@ namespace System
                 SetupBindingPaths(trustedPlatformAssemblies, platformResourceRoots, appPaths, appNiPaths, appLocalWinMD);
             }
 
-            string domainManagerAssembly;
-            string domainManagerType;
-            GetAppDomainManagerType(out domainManagerAssembly, out domainManagerType);
-
-            if (domainManagerAssembly != null && domainManagerType != null)
-            {
-                try
-                {
-                    _domainManager = CreateInstanceAndUnwrap(domainManagerAssembly, domainManagerType) as AppDomainManager;
-                }
-                catch (FileNotFoundException e)
-                {
-                    throw new TypeLoadException(SR.Argument_NoDomainManager, e);
-                }
-                catch (SecurityException e)
-                {
-                    throw new TypeLoadException(SR.Argument_NoDomainManager, e);
-                }
-                catch (TypeLoadException e)
-                {
-                    throw new TypeLoadException(SR.Argument_NoDomainManager, e);
-                }
-
-                if (_domainManager == null)
-                {
-                    throw new TypeLoadException(SR.Argument_NoDomainManager);
-                }
-
-                // If this domain was not created by a managed call to CreateDomain, then the AppDomainSetup
-                // will not have the correct values for the AppDomainManager set.
-                FusionStore.AppDomainManagerAssembly = domainManagerAssembly;
-                FusionStore.AppDomainManagerType = domainManagerType;
-
-                bool notifyFusion = _domainManager.GetType() != typeof(System.AppDomainManager) && !DisableFusionUpdatesFromADManager();
-
-
-
-                AppDomainSetup FusionStoreOld = null;
-                if (notifyFusion)
-                    FusionStoreOld = new AppDomainSetup(FusionStore, true);
-
-                // Initialize the AppDomainMAnager and register the instance with the native host if requested
-                _domainManager.InitializeNewDomain(FusionStore);
-
-                if (notifyFusion)
-                    SetupFusionStore(_FusionStore, FusionStoreOld); // Notify Fusion about the changes the user implementation of InitializeNewDomain may have made to the FusionStore object.
-            }
-
             InitializeCompatibilityFlags();
         }
 
@@ -485,34 +424,6 @@ namespace System
         }
 
         /// <summary>
-        ///     Get the name of the assembly and type that act as the AppDomainManager for this domain
-        /// </summary>
-        internal void GetAppDomainManagerType(out string assembly, out string type)
-        {
-            // We can't just use our parameters because we need to ensure that the strings used for hte QCall
-            // are on the stack.
-            string localAssembly = null;
-            string localType = null;
-
-            GetAppDomainManagerType(GetNativeHandle(),
-                                    JitHelpers.GetStringHandleOnStack(ref localAssembly),
-                                    JitHelpers.GetStringHandleOnStack(ref localType));
-
-            assembly = localAssembly;
-            type = localType;
-        }
-
-        /// <summary>
-        ///     Set the assembly and type which act as the AppDomainManager for this domain
-        /// </summary>
-        private void SetAppDomainManagerType(string assembly, string type)
-        {
-            Debug.Assert(assembly != null, "assembly != null");
-            Debug.Assert(type != null, "type != null");
-            SetAppDomainManagerType(GetNativeHandle(), assembly, type);
-        }
-
-        /// <summary>
         ///     Called for every AppDomain (including the default domain) to initialize the security of the AppDomain)
         /// </summary>
         private void InitializeDomainSecurity(Evidence providedSecurityInfo,
@@ -584,23 +495,6 @@ namespace System
             }
         }
 
-
-        public ObjectHandle CreateInstance(String assemblyName,
-                                           String typeName)
-
-        {
-            // jit does not check for that, so we should do it ...
-            if (this == null)
-                throw new NullReferenceException();
-
-            if (assemblyName == null)
-                throw new ArgumentNullException(nameof(assemblyName));
-            Contract.EndContractBlock();
-
-            return Activator.CreateInstance(assemblyName,
-                                            typeName);
-        }
-
         public static AppDomain CurrentDomain
         {
             get
@@ -1158,12 +1052,6 @@ namespace System
             }
 #endif // FEATURE_COMINTEROP
 
-            // set up the AppDomainManager for this domain and initialize security.
-            if (adSetup.AppDomainManagerAssembly != null && adSetup.AppDomainManagerType != null)
-            {
-                ad.SetAppDomainManagerType(adSetup.AppDomainManagerAssembly, adSetup.AppDomainManagerType);
-            }
-
             ad.CreateAppDomainManager(); // could modify FusionStore's object
             ad.InitializeDomainSecurity(providedSecurityInfo,
                                         creatorsSecurityInfo,
@@ -1301,16 +1189,6 @@ namespace System
             }
         }
 
-        public Object CreateInstanceAndUnwrap(String assemblyName,
-                                              String typeName)
-        {
-            ObjectHandle oh = CreateInstance(assemblyName, typeName);
-            if (oh == null)
-                return null;
-
-            return oh.Unwrap();
-        } // CreateInstanceAndUnwrap
-
         public Int32 Id
         {
             get
diff --git a/src/mscorlib/src/System/BCLDebug.cs b/src/mscorlib/src/System/BCLDebug.cs
index 67f7c9a0f7..12a0d55995 100644
--- a/src/mscorlib/src/System/BCLDebug.cs
+++ b/src/mscorlib/src/System/BCLDebug.cs
@@ -15,7 +15,6 @@ namespace System
 {
     using System.IO;
     using System.Text;
-    using System.Runtime.Remoting;
     using System.Diagnostics;
     using Microsoft.Win32;
     using System.Runtime.CompilerServices;
diff --git a/src/mscorlib/src/System/DelegateSerializationHolder.cs b/src/mscorlib/src/System/DelegateSerializationHolder.cs
index d7ad827673..17e2dd9be2 100644
--- a/src/mscorlib/src/System/DelegateSerializationHolder.cs
+++ b/src/mscorlib/src/System/DelegateSerializationHolder.cs
@@ -5,7 +5,6 @@
 
 using System;
 using System.Reflection;
-using System.Runtime.Remoting;
 using System.Runtime.Serialization;
 using System.Globalization;
 using System.Diagnostics.Contracts;
diff --git a/src/mscorlib/src/System/Diagnostics/log.cs b/src/mscorlib/src/System/Diagnostics/log.cs
index b62ea493e7..9ec0cfc7fb 100644
--- a/src/mscorlib/src/System/Diagnostics/log.cs
+++ b/src/mscorlib/src/System/Diagnostics/log.cs
@@ -4,7 +4,6 @@
 
 namespace System.Diagnostics
 {
-    using System.Runtime.Remoting;
     using System;
     using System.IO;
     using System.Collections;
diff --git a/src/mscorlib/src/System/Empty.cs b/src/mscorlib/src/System/Empty.cs
index 502e8dfea7..7c4503ef29 100644
--- a/src/mscorlib/src/System/Empty.cs
+++ b/src/mscorlib/src/System/Empty.cs
@@ -9,7 +9,6 @@
 using System.Diagnostics.Contracts;
 
 using System;
-using System.Runtime.Remoting;
 using System.Runtime.Serialization;
 
 namespace System
diff --git a/src/mscorlib/src/System/Environment.cs b/src/mscorlib/src/System/Environment.cs
index dddbdc242d..257deb27eb 100644
--- a/src/mscorlib/src/System/Environment.cs
+++ b/src/mscorlib/src/System/Environment.cs
@@ -77,9 +77,6 @@ namespace System
             }
         }
 
-
-        private static volatile OperatingSystem m_os;  // Cached OperatingSystem value
-
         /*==================================TickCount===================================
         **Action: Gets the number of ticks since the system was started.
         **Returns: The number of ticks since the system was started.
diff --git a/src/mscorlib/src/System/Globalization/EncodingDataItem.cs b/src/mscorlib/src/System/Globalization/EncodingDataItem.cs
index b049eaf45d..dedcab58a7 100644
--- a/src/mscorlib/src/System/Globalization/EncodingDataItem.cs
+++ b/src/mscorlib/src/System/Globalization/EncodingDataItem.cs
@@ -3,7 +3,6 @@
 // See the LICENSE file in the project root for more information.
 
 using System.Text;
-using System.Runtime.Remoting;
 using System;
 using System.Security;
 
diff --git a/src/mscorlib/src/System/IO/__Error.cs b/src/mscorlib/src/System/IO/__Error.cs
index 70f83261ed..1af195ef77 100644
--- a/src/mscorlib/src/System/IO/__Error.cs
+++ b/src/mscorlib/src/System/IO/__Error.cs
@@ -206,11 +206,5 @@ namespace System.IO
         {
             throw new NotSupportedException(SR.NotSupported_UnwritableStream);
         }
-
-        // From WinError.h
-        internal const int ERROR_FILE_NOT_FOUND = Win32Native.ERROR_FILE_NOT_FOUND;
-        internal const int ERROR_PATH_NOT_FOUND = Win32Native.ERROR_PATH_NOT_FOUND;
-        internal const int ERROR_ACCESS_DENIED = Win32Native.ERROR_ACCESS_DENIED;
-        internal const int ERROR_INVALID_PARAMETER = Win32Native.ERROR_INVALID_PARAMETER;
     }
 }
diff --git a/src/mscorlib/src/System/MissingFieldException.cs b/src/mscorlib/src/System/MissingFieldException.cs
index 5668f9e9b3..39f66a2b37 100644
--- a/src/mscorlib/src/System/MissingFieldException.cs
+++ b/src/mscorlib/src/System/MissingFieldException.cs
@@ -11,7 +11,6 @@
 
 
 using System;
-using System.Runtime.Remoting;
 using System.Runtime.Serialization;
 using System.Runtime.CompilerServices;
 using System.Globalization;
diff --git a/src/mscorlib/src/System/MissingMemberException.cs b/src/mscorlib/src/System/MissingMemberException.cs
index 51150e113c..0b8342f3c6 100644
--- a/src/mscorlib/src/System/MissingMemberException.cs
+++ b/src/mscorlib/src/System/MissingMemberException.cs
@@ -13,7 +13,6 @@
 
 
 using System;
-using System.Runtime.Remoting;
 using System.Runtime.Serialization;
 using System.Runtime.CompilerServices;
 using System.Globalization;
diff --git a/src/mscorlib/src/System/OperatingSystem.cs b/src/mscorlib/src/System/OperatingSystem.cs
deleted file mode 100644
index 5eb1253fa5..0000000000
--- a/src/mscorlib/src/System/OperatingSystem.cs
+++ /dev/null
@@ -1,154 +0,0 @@
-// Licensed to the .NET Foundation under one or more agreements.
-// The .NET Foundation licenses this file to you under the MIT license.
-// See the LICENSE file in the project root for more information.
-
-/*============================================================
-**
-**
-**
-** Purpose: 
-**
-**
-===========================================================*/
-
-using System.Runtime.Serialization;
-using System.Globalization;
-using System.Runtime.InteropServices;
-using System.Diagnostics.Contracts;
-
-namespace System
-{
-    [Serializable]
-    internal sealed class OperatingSystem : ICloneable, ISerializable
-    {
-        private Version _version;
-        private PlatformID _platform;
-        private string _servicePack;
-        private string _versionString;
-
-        private OperatingSystem()
-        {
-        }
-
-        internal OperatingSystem(PlatformID platform, Version version, string servicePack)
-        {
-            if (platform < PlatformID.Win32S || platform > PlatformID.MacOSX)
-            {
-                throw new ArgumentException(
-                    SR.Format(SR.Arg_EnumIllegalVal, (int)platform),
-                    nameof(platform));
-            }
-
-            if ((Object)version == null)
-                throw new ArgumentNullException(nameof(version));
-            Contract.EndContractBlock();
-
-            _platform = platform;
-            _version = (Version)version.Clone();
-            _servicePack = servicePack;
-        }
-
-        private OperatingSystem(SerializationInfo info, StreamingContext context)
-        {
-            SerializationInfoEnumerator enumerator = info.GetEnumerator();
-            while (enumerator.MoveNext())
-            {
-                switch (enumerator.Name)
-                {
-                    case "_version":
-                        _version = (Version)info.GetValue("_version", typeof(Version));
-                        break;
-                    case "_platform":
-                        _platform = (PlatformID)info.GetValue("_platform", typeof(PlatformID));
-                        break;
-                    case "_servicePack":
-                        _servicePack = info.GetString("_servicePack");
-                        break;
-                }
-            }
-
-            if (_version == null)
-            {
-                throw new SerializationException(SR.Format(SR.Serialization_MissField, "_version"));
-            }
-        }
-
-        public void GetObjectData(SerializationInfo info, StreamingContext context)
-        {
-            if (info == null)
-            {
-                throw new ArgumentNullException(nameof(info));
-            }
-            Contract.EndContractBlock();
-
-            info.AddValue("_version", _version);
-            info.AddValue("_platform", _platform);
-            info.AddValue("_servicePack", _servicePack);
-        }
-
-        public Version Version
-        {
-            get { return _version; }
-        }
-
-        public Object Clone()
-        {
-            return new OperatingSystem(_platform,
-                                       _version, _servicePack);
-        }
-
-        public override String ToString()
-        {
-            return VersionString;
-        }
-
-        public String VersionString
-        {
-            get
-            {
-                if (_versionString != null)
-                {
-                    return _versionString;
-                }
-
-                String os;
-                switch (_platform)
-                {
-                    case PlatformID.Win32NT:
-                        os = "Microsoft Windows NT ";
-                        break;
-                    case PlatformID.Win32Windows:
-                        if ((_version.Major > 4) ||
-                            ((_version.Major == 4) && (_version.Minor > 0)))
-                            os = "Microsoft Windows 98 ";
-                        else
-                            os = "Microsoft Windows 95 ";
-                        break;
-                    case PlatformID.Win32S:
-                        os = "Microsoft Win32S ";
-                        break;
-                    case PlatformID.WinCE:
-                        os = "Microsoft Windows CE ";
-                        break;
-                    case PlatformID.MacOSX:
-                        os = "Mac OS X ";
-                        break;
-                    default:
-                        os = "<unknown> ";
-                        break;
-                }
-
-                if (String.IsNullOrEmpty(_servicePack))
-                {
-                    _versionString = os + _version.ToString();
-                }
-                else
-                {
-                    _versionString = os + _version.ToString(3) + " " + _servicePack;
-                }
-
-                return _versionString;
-            }
-        }
-    }
-}
diff --git a/src/mscorlib/src/System/PlatformID.cs b/src/mscorlib/src/System/PlatformID.cs
deleted file mode 100644
index dfab2175ab..0000000000
--- a/src/mscorlib/src/System/PlatformID.cs
+++ /dev/null
@@ -1,27 +0,0 @@
-// Licensed to the .NET Foundation under one or more agreements.
-// The .NET Foundation licenses this file to you under the MIT license.
-// See the LICENSE file in the project root for more information.
-
-/*============================================================
-**
-**
-**
-** Purpose: Defines IDs for supported platforms
-**
-**
-===========================================================*/
-
-namespace System
-{
-    [Serializable]
-    internal enum PlatformID
-    {
-        Win32S = 0,
-        Win32Windows = 1,
-        Win32NT = 2,
-        WinCE = 3,
-        Unix = 4,
-        Xbox = 5,
-        MacOSX = 6
-    }
-}
diff --git a/src/mscorlib/src/System/Reflection/Assembly.CoreCLR.cs b/src/mscorlib/src/System/Reflection/Assembly.CoreCLR.cs
index cfb36e7f6d..9d34b48177 100644
--- a/src/mscorlib/src/System/Reflection/Assembly.CoreCLR.cs
+++ b/src/mscorlib/src/System/Reflection/Assembly.CoreCLR.cs
@@ -87,26 +87,6 @@ namespace System.Reflection
             return AssemblyLoadContext.Default.LoadFromAssemblyPath(fullPath);
         }
 
-        // Evidence is protected in Assembly.Load()
-        [Obsolete("This method is obsolete and will be removed in a future release of the .NET Framework. Please use an overload of LoadFrom which does not take an Evidence parameter. See http://go.microsoft.com/fwlink/?LinkID=155570 for more information.")]
-        [System.Security.DynamicSecurityMethod] // Methods containing StackCrawlMark local var has to be marked DynamicSecurityMethod
-        internal static Assembly LoadFrom(String assemblyFile,
-                                        Evidence securityEvidence)
-        {
-            Contract.Ensures(Contract.Result<Assembly>() != null);
-
-            StackCrawlMark stackMark = StackCrawlMark.LookForMyCaller;
-
-            return RuntimeAssembly.InternalLoadFrom(
-                assemblyFile,
-                securityEvidence,
-                null, // hashValue
-                AssemblyHashAlgorithm.None,
-                false,// forIntrospection);
-                ref stackMark);
-        }
-
-        [System.Security.DynamicSecurityMethod] // Methods containing StackCrawlMark local var has to be marked DynamicSecurityMethod
         public static Assembly LoadFrom(String assemblyFile,
                                         byte[] hashValue,
                                         AssemblyHashAlgorithm hashAlgorithm)
diff --git a/src/mscorlib/src/System/Reflection/RuntimeAssembly.cs b/src/mscorlib/src/System/Reflection/RuntimeAssembly.cs
index 4632525453..cb2d156521 100644
--- a/src/mscorlib/src/System/Reflection/RuntimeAssembly.cs
+++ b/src/mscorlib/src/System/Reflection/RuntimeAssembly.cs
@@ -320,26 +320,6 @@ namespace System.Reflection
             return CustomAttributeData.GetCustomAttributesInternal(this);
         }
 
-        [System.Security.DynamicSecurityMethod] // Methods containing StackCrawlMark local var has to be marked DynamicSecurityMethod
-        internal static RuntimeAssembly InternalLoadFrom(String assemblyFile,
-                                                         Evidence securityEvidence,
-                                                         byte[] hashValue,
-                                                         AssemblyHashAlgorithm hashAlgorithm,
-                                                         bool forIntrospection,
-                                                         ref StackCrawlMark stackMark)
-        {
-            if (assemblyFile == null)
-                throw new ArgumentNullException(nameof(assemblyFile));
-
-            Contract.EndContractBlock();
-
-            AssemblyName an = new AssemblyName();
-            an.CodeBase = assemblyFile;
-            an.SetHashControl(hashValue, hashAlgorithm);
-            // The stack mark is used for MDA filtering
-            return InternalLoadAssemblyName(an, securityEvidence, null, ref stackMark, true /*thrownOnFileNotFound*/, forIntrospection);
-        }
-
         // Wrapper function to wrap the typical use of InternalLoad.
         internal static RuntimeAssembly InternalLoad(String assemblyString,
                                                      Evidence assemblySecurity,
diff --git a/src/mscorlib/src/System/RtType.cs b/src/mscorlib/src/System/RtType.cs
index 3ae2e04e2a..b64f95bb6a 100644
--- a/src/mscorlib/src/System/RtType.cs
+++ b/src/mscorlib/src/System/RtType.cs
@@ -23,7 +23,6 @@ using System.Runtime.Serialization;
 using System.Runtime.CompilerServices;
 using System.Security;
 using System.Text;
-using System.Runtime.Remoting;
 using MdSigCallingConvention = System.Signature.MdSigCallingConvention;
 using RuntimeTypeCache = System.RuntimeType.RuntimeTypeCache;
 using System.Runtime.InteropServices;
diff --git a/src/mscorlib/src/System/Runtime/CompilerServices/RuntimeWrappedException.cs b/src/mscorlib/src/System/Runtime/CompilerServices/RuntimeWrappedException.cs
index c050000169..97365b0f22 100644
--- a/src/mscorlib/src/System/Runtime/CompilerServices/RuntimeWrappedException.cs
+++ b/src/mscorlib/src/System/Runtime/CompilerServices/RuntimeWrappedException.cs
@@ -13,7 +13,6 @@
 
 using System;
 using System.Runtime.Serialization;
-using System.Runtime.Remoting;
 using System.Diagnostics.Contracts;
 
 namespace System.Runtime.CompilerServices
diff --git a/src/mscorlib/src/System/Runtime/InteropServices/ComEventsHelper.cs b/src/mscorlib/src/System/Runtime/InteropServices/ComEventsHelper.cs
index 8198d9fd18..fe69f619fe 100644
--- a/src/mscorlib/src/System/Runtime/InteropServices/ComEventsHelper.cs
+++ b/src/mscorlib/src/System/Runtime/InteropServices/ComEventsHelper.cs
@@ -99,7 +99,6 @@
 // code:ComEventsMethod.Invoke
 
 using System;
-using System.Runtime.Remoting;
 
 namespace System.Runtime.InteropServices
 {
diff --git a/src/mscorlib/src/System/Runtime/InteropServices/Marshal.cs b/src/mscorlib/src/System/Runtime/InteropServices/Marshal.cs
index 97f1bc5432..13eb953b41 100644
--- a/src/mscorlib/src/System/Runtime/InteropServices/Marshal.cs
+++ b/src/mscorlib/src/System/Runtime/InteropServices/Marshal.cs
@@ -22,7 +22,6 @@ namespace System.Runtime.InteropServices
     using System.Security;
     using System.Text;
     using System.Threading;
-    using System.Runtime.Remoting;
     using System.Runtime.CompilerServices;
     using System.Globalization;
     using System.Runtime.ConstrainedExecution;
diff --git a/src/mscorlib/src/System/Runtime/Remoting/ObjectHandle.cs b/src/mscorlib/src/System/Runtime/Remoting/ObjectHandle.cs
deleted file mode 100644
index e76882d6df..0000000000
--- a/src/mscorlib/src/System/Runtime/Remoting/ObjectHandle.cs
+++ /dev/null
@@ -1,40 +0,0 @@
-// Licensed to the .NET Foundation under one or more agreements.
-// The .NET Foundation licenses this file to you under the MIT license.
-// See the LICENSE file in the project root for more information.
-
-/*============================================================
-**
-**
-**
-** ObjectHandle wraps object references. A Handle allows a 
-** marshal by value object to be returned through an 
-** indirection allowing the caller to control when the
-** object is loaded into their domain.
-**
-** 
-===========================================================*/
-
-using System;
-using System.Runtime.InteropServices;
-
-namespace System.Runtime.Remoting
-{
-    public class ObjectHandle
-    {
-        private Object WrappedObject;
-
-        private ObjectHandle()
-        {
-        }
-
-        internal ObjectHandle(Object o)
-        {
-            WrappedObject = o;
-        }
-
-        internal Object Unwrap()
-        {
-            return WrappedObject;
-        }
-    }
-}
diff --git a/src/mscorlib/src/System/Runtime/Serialization/FormatterServices.cs b/src/mscorlib/src/System/Runtime/Serialization/FormatterServices.cs
index 18139324a3..b49b372b4b 100644
--- a/src/mscorlib/src/System/Runtime/Serialization/FormatterServices.cs
+++ b/src/mscorlib/src/System/Runtime/Serialization/FormatterServices.cs
@@ -17,7 +17,6 @@ using System.Reflection;
 using System.Collections;
 using System.Collections.Generic;
 using System.Security;
-using System.Runtime.Remoting;
 using System.Runtime.CompilerServices;
 using System.Runtime.Versioning;
 using System.Threading;
diff --git a/src/mscorlib/src/System/Runtime/Serialization/SerializationInfo.cs b/src/mscorlib/src/System/Runtime/Serialization/SerializationInfo.cs
index 7fc3ce27d9..8fb54c79a7 100644
--- a/src/mscorlib/src/System/Runtime/Serialization/SerializationInfo.cs
+++ b/src/mscorlib/src/System/Runtime/Serialization/SerializationInfo.cs
@@ -15,7 +15,6 @@
 using System;
 using System.Collections.Generic;
 using System.Reflection;
-using System.Runtime.Remoting;
 using System.Globalization;
 using System.Diagnostics;
 using System.Diagnostics.Contracts;
diff --git a/src/mscorlib/src/System/SharedStatics.cs b/src/mscorlib/src/System/SharedStatics.cs
index a6a04d9614..5c37f25446 100644
--- a/src/mscorlib/src/System/SharedStatics.cs
+++ b/src/mscorlib/src/System/SharedStatics.cs
@@ -12,7 +12,6 @@
 =============================================================================*/
 
 using System.Threading;
-using System.Runtime.Remoting;
 using System.Security;
 using System.Runtime.CompilerServices;
 using System.Runtime.ConstrainedExecution;
diff --git a/src/mscorlib/src/System/Text/Encoding.cs b/src/mscorlib/src/System/Text/Encoding.cs
index 159123495b..5788051e23 100644
--- a/src/mscorlib/src/System/Text/Encoding.cs
+++ b/src/mscorlib/src/System/Text/Encoding.cs
@@ -8,7 +8,6 @@ namespace System.Text
     using System.Collections;
     using System.Collections.Generic;
     using System.Runtime;
-    using System.Runtime.Remoting;
     using System.Runtime.Serialization;
     using System.Globalization;
     using System.Security;
diff --git a/src/mscorlib/src/System/Threading/Monitor.cs b/src/mscorlib/src/System/Threading/Monitor.cs
index 3ace3335aa..0df64a5e5c 100644
--- a/src/mscorlib/src/System/Threading/Monitor.cs
+++ b/src/mscorlib/src/System/Threading/Monitor.cs
@@ -17,7 +17,6 @@
 
 using System;
 using System.Runtime;
-using System.Runtime.Remoting;
 using System.Threading;
 using System.Runtime.CompilerServices;
 using System.Runtime.ConstrainedExecution;
diff --git a/src/mscorlib/src/System/Threading/WaitHandle.cs b/src/mscorlib/src/System/Threading/WaitHandle.cs
index f3412d264f..da4856ee96 100644
--- a/src/mscorlib/src/System/Threading/WaitHandle.cs
+++ b/src/mscorlib/src/System/Threading/WaitHandle.cs
@@ -15,7 +15,6 @@
 namespace System.Threading
 {
     using System.Threading;
-    using System.Runtime.Remoting;
     using System;
     using System.Runtime.CompilerServices;
     using System.Runtime.InteropServices;
diff --git a/src/mscorlib/src/System/TypeLoadException.cs b/src/mscorlib/src/System/TypeLoadException.cs
index 85e1da5920..339ba08e7b 100644
--- a/src/mscorlib/src/System/TypeLoadException.cs
+++ b/src/mscorlib/src/System/TypeLoadException.cs
@@ -13,7 +13,6 @@
 
 using System;
 using System.Globalization;
-using System.Runtime.Remoting;
 using System.Runtime.Serialization;
 using System.Runtime.InteropServices;
 using System.Runtime.CompilerServices;
diff --git a/src/vm/assemblynative.cpp b/src/vm/assemblynative.cpp
index 702c255c97..e9bcc2366b 100644
--- a/src/vm/assemblynative.cpp
+++ b/src/vm/assemblynative.cpp
@@ -326,110 +326,6 @@ Assembly* AssemblyNative::LoadFromBuffer(BOOL fForIntrospection, const BYTE* pAs
     return pAssembly;
 }
 
-FCIMPL6(Object*, AssemblyNative::LoadImage, U1Array* PEByteArrayUNSAFE,
-        U1Array* SymByteArrayUNSAFE, Object* securityUNSAFE,
-        StackCrawlMark* stackMark, CLR_BOOL fForIntrospection, SecurityContextSource securityContextSource)
-{
-    FCALL_CONTRACT;
-
-    struct _gc
-    {
-        U1ARRAYREF PEByteArray;
-        U1ARRAYREF SymByteArray;
-        OBJECTREF  security;
-        OBJECTREF Throwable;
-        OBJECTREF refRetVal;
-    } gc;
-
-    gc.PEByteArray  = (U1ARRAYREF) PEByteArrayUNSAFE;
-    gc.SymByteArray = (U1ARRAYREF) SymByteArrayUNSAFE;
-    gc.security     = (OBJECTREF)  securityUNSAFE;
-    gc.Throwable = NULL;
-    gc.refRetVal = NULL;
-
-    HELPER_METHOD_FRAME_BEGIN_RET_PROTECT(gc);
-
-
-    if (gc.PEByteArray == NULL)
-        COMPlusThrow(kArgumentNullException, W("ArgumentNull_Array"));
-
-    NewArrayHolder<BYTE> pbSyms;
-    DWORD cbSyms = 0;
-
-#ifdef DEBUGGING_SUPPORTED
-    // If we were given symbols, save a copy of them.
-            // the debugger, load them now).
-    if (gc.SymByteArray != NULL)
-    {
-        Security::CopyByteArrayToEncoding(&gc.SymByteArray,
-                                                    &pbSyms, &cbSyms);
-
-    }
-#endif // DEBUGGING_SUPPORTED
-
-    Assembly* pAssembly = NULL;
-    // Pin byte array for loading
-    {
-        Wrapper<OBJECTHANDLE, DoNothing, DestroyPinningHandle> handle(
-            GetAppDomain()->CreatePinningHandle(gc.PEByteArray));
-
-        const BYTE *pbImage = gc.PEByteArray->GetDirectConstPointerToNonObjectElements();
-        DWORD cbImage = gc.PEByteArray->GetNumComponents();
-        pAssembly = LoadFromBuffer(fForIntrospection, pbImage, cbImage, pbSyms, cbSyms, stackMark, OBJECTREFToObject(gc.security), securityContextSource);
-    }
-
-
-    if (pAssembly != NULL)
-        gc.refRetVal = pAssembly->GetExposedObject();
-
-    HELPER_METHOD_FRAME_END();
-
-    return OBJECTREFToObject(gc.refRetVal);
-}
-FCIMPLEND
-
-FCIMPL2(Object*, AssemblyNative::LoadFile, StringObject* pathUNSAFE, Object* securityUNSAFE)
-{
-    FCALL_CONTRACT;
-
-    struct _gc {
-        OBJECTREF refRetVal;
-        OBJECTREF refSecurity;
-        STRINGREF strPath;
-    } gc;
-    
-    gc.refRetVal = NULL;
-    gc.refSecurity = ObjectToOBJECTREF(securityUNSAFE);
-    gc.strPath = ObjectToSTRINGREF(pathUNSAFE);
-
-    HELPER_METHOD_FRAME_BEGIN_RET_PROTECT(gc);
-
-    if(CorHost2::IsLoadFromBlocked())
-        COMPlusThrow(kFileLoadException, FUSION_E_LOADFROM_BLOCKED);
-
-    if (pathUNSAFE == NULL)
-        COMPlusThrow(kArgumentNullException, W("ArgumentNull_Path"));
-
-    StackSString path;
-    gc.strPath->GetSString(path);
-
-    Assembly *pAssembly = AssemblySpec::LoadAssembly(path);
-
-    LOG((LF_CLASSLOADER, 
-         LL_INFO100, 
-         "\tLoaded assembly from a file\n"));
-
-
-    if (pAssembly != NULL)
-        gc.refRetVal = (ASSEMBLYREF) pAssembly->GetExposedObject();
-
-    HELPER_METHOD_FRAME_END();
-
-    return OBJECTREFToObject(gc.refRetVal);
-}
-FCIMPLEND
-
-
 /* static */
 Assembly* AssemblyNative::LoadFromPEImage(ICLRPrivBinder* pBinderContext, PEImage *pILImage, PEImage *pNIImage)
 {
diff --git a/src/vm/assemblynative.hpp b/src/vm/assemblynative.hpp
index 514589fb4c..71e8b51181 100644
--- a/src/vm/assemblynative.hpp
+++ b/src/vm/assemblynative.hpp
@@ -46,10 +46,6 @@ public:
     static
     void QCALLTYPE GetExecutingAssembly(QCall::StackCrawlMarkHandle stackMark, QCall::ObjectHandleOnStack retAssembly);
 
-    static FCDECL2(Object*,         LoadFile,                   StringObject* pathUNSAFE,
-                                                                Object* securityUNSAFE);
-    static FCDECL6(Object*,         LoadImage,                  U1Array* PEByteArrayUNSAFE, U1Array* SymByteArrayUNSAFE, Object* securityUNSAFE, StackCrawlMark* stackMark, CLR_BOOL fForIntrospection, SecurityContextSource securityContextSource);
-
     static FCDECL10(Object*,         Load,                       AssemblyNameBaseObject* assemblyNameUNSAFE, 
                                                                 StringObject* codeBaseUNSAFE, 
                                                                 Object* securityUNSAFE, 
@@ -61,9 +57,6 @@ public:
                                                                 CLR_BOOL fSuppressSecurityChecks,
                                                                 INT_PTR ptrLoadContextBinder);
 
-    static FCDECL1(FC_BOOL_RET, IsFrameworkAssembly, AssemblyNameBaseObject* refAssemblyNameUNSAFE);
-    static FCDECL1(FC_BOOL_RET, IsNewPortableAssembly, AssemblyNameBaseObject* refAssemblyNameUNSAFE);
-
     //
     // instance FCALLs
     //
diff --git a/src/vm/ecalllist.h b/src/vm/ecalllist.h
index 81bc6568a7..cc6966ed8e 100644
--- a/src/vm/ecalllist.h
+++ b/src/vm/ecalllist.h
@@ -594,7 +594,6 @@ FCFuncStart(gAssemblyFuncs)
     QCFuncElement("GetVersion", AssemblyNative::GetVersion)
     FCFuncElement("FCallIsDynamic", AssemblyNative::IsDynamic)
     FCFuncElement("_nLoad", AssemblyNative::Load)
-    FCFuncElement("nLoadImage", AssemblyNative::LoadImage)
     QCFuncElement("GetType", AssemblyNative::GetType)
     QCFuncElement("GetManifestResourceInfo", AssemblyNative::GetManifestResourceInfo)
     QCFuncElement("GetModules", AssemblyNative::GetModules)