1 files changed, 1 insertions, 30 deletions
diff --git a/src/mscorlib/src/System/Reflection/RuntimeParameterInfo.cs b/src/mscorlib/src/System/Reflection/RuntimeParameterInfo.cs
index addf68e75d..d21af03649 100644
--- a/src/mscorlib/src/System/Reflection/RuntimeParameterInfo.cs
+++ b/src/mscorlib/src/System/Reflection/RuntimeParameterInfo.cs
@@ -11,7 +11,6 @@ using MdToken = System.Reflection.MetadataToken;
 
 namespace System.Reflection
 {
-    [Serializable]
     internal unsafe sealed class RuntimeParameterInfo : ParameterInfo, ISerializable
     {
         #region Static Members
@@ -164,35 +163,7 @@ namespace System.Reflection
         #region VTS magic to serialize/deserialized to/from pre-Whidbey endpoints.
         public void GetObjectData(SerializationInfo info, StreamingContext context)
         {
-            if (info == null)
-                throw new ArgumentNullException(nameof(info));
-            Contract.EndContractBlock();
-
-            // We could be serializing for consumption by a pre-Whidbey
-            // endpoint. Therefore we set up all the serialized fields to look
-            // just like a v1.0/v1.1 instance.
-
-            // Need to set the type to ParameterInfo so that pre-Whidbey and Whidbey code
-            // can deserialize this. This is also why we cannot simply use [OnSerializing].
-            info.SetType(typeof(ParameterInfo));
-
-            // Use the properties intead of the fields in case the fields haven't been et
-            // _importer, bExtraConstChecked, and m_cachedData don't need to be set
-
-            // Now set the legacy fields that the current implementation doesn't
-            // use any more. Note that _importer is a raw pointer that should
-            // never have been serialized in V1. We set it to zero here; if the
-            // deserializer uses it (by calling GetCustomAttributes() on this
-            // instance) they'll AV, but at least it will be a well defined
-            // exception and not a random AV.
-
-            info.AddValue("AttrsImpl", Attributes);
-            info.AddValue("ClassImpl", ParameterType);
-            info.AddValue("DefaultValueImpl", DefaultValue);
-            info.AddValue("MemberImpl", Member);
-            info.AddValue("NameImpl", Name);
-            info.AddValue("PositionImpl", Position);
-            info.AddValue("_token", m_tkParamDef);
+            throw new PlatformNotSupportedException();
         }
         #endregion