1 files changed, 0 insertions, 102 deletions
diff --git a/src/mscorlib/src/System/IO/ReadLinesIterator.cs b/src/mscorlib/src/System/IO/ReadLinesIterator.cs
deleted file mode 100644
index ce2ad2ad0f..0000000000
--- a/src/mscorlib/src/System/IO/ReadLinesIterator.cs
+++ /dev/null
@@ -1,102 +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.
-using System;
-using System.Diagnostics.Contracts;
-using System.Runtime.Versioning;
-using System.Text;
-
-namespace System.IO
-{
-    // An iterator that returns a single line at-a-time from a given file.
-    //
-    // Known issues which cannot be changed to remain compatible with 4.0:
-    //
-    //  - The underlying StreamReader is allocated upfront for the IEnumerable<T> before 
-    //    GetEnumerator has even been called. While this is good in that exceptions such as 
-    //    DirectoryNotFoundException and FileNotFoundException are thrown directly by 
-    //    File.ReadLines (which the user probably expects), it also means that the reader 
-    //    will be leaked if the user never actually foreach's over the enumerable (and hence 
-    //    calls Dispose on at least one IEnumerator<T> instance).
-    //
-    //  - Reading to the end of the IEnumerator<T> disposes it. This means that Dispose 
-    //    is called twice in a normal foreach construct.
-    //
-    //  - IEnumerator<T> instances from the same IEnumerable<T> party on the same underlying 
-    //    reader (Dev10 Bugs 904764).
-    //
-    internal class ReadLinesIterator : Iterator<string>
-    {
-        private readonly string _path;
-        private readonly Encoding _encoding;
-        private StreamReader _reader;
-
-        private ReadLinesIterator(string path, Encoding encoding, StreamReader reader)
-        {
-            Contract.Requires(path != null);
-            Contract.Requires(path.Length > 0);
-            Contract.Requires(encoding != null);
-            Contract.Requires(reader != null);
-
-            _path = path;
-            _encoding = encoding;
-            _reader = reader;
-        }
-
-        public override bool MoveNext()
-        {
-            if (this._reader != null)
-            {
-                this.current = _reader.ReadLine();
-                if (this.current != null)
-                    return true;
-
-                // To maintain 4.0 behavior we Dispose 
-                // after reading to the end of the reader.
-                Dispose();
-            }
-
-            return false;
-        }
-
-        protected override Iterator<string> Clone()
-        {
-            // NOTE: To maintain the same behavior with the previous yield-based
-            // iterator in 4.0, we have all the IEnumerator<T> instances share the same 
-            // underlying reader. If we have already been disposed, _reader will be null, 
-            // which will cause CreateIterator to simply new up a new instance to start up
-            // a new iteration. Dev10 Bugs 904764 has been filed to fix this in next side-
-            // by-side release.
-            return CreateIterator(_path, _encoding, _reader);
-        }
-
-        protected override void Dispose(bool disposing)
-        {
-            try
-            {
-                if (disposing)
-                {
-                    if (_reader != null)
-                    {
-                        _reader.Dispose();
-                    }
-                }
-            }
-            finally
-            {
-                _reader = null;
-                base.Dispose(disposing);
-            }
-        }
-
-        internal static ReadLinesIterator CreateIterator(string path, Encoding encoding)
-        {
-            return CreateIterator(path, encoding, (StreamReader)null);
-        }
-
-        private static ReadLinesIterator CreateIterator(string path, Encoding encoding, StreamReader reader)
-        {
-            return new ReadLinesIterator(path, encoding, reader ?? new StreamReader(path, encoding));
-        }
-    }
-}