Remove public SocketInputStream and SocketOutputStream clases

runtime/bin/socket_stream.dart

Index: runtime/bin/socket_stream.dart
diff --git a/runtime/bin/socket_stream.dart b/runtime/bin/socket_stream.dart
deleted file mode 100644
index 668cfe0abbb5dba8fc1dee384f4afe4b369fecc8..0000000000000000000000000000000000000000
--- a/runtime/bin/socket_stream.dart
+++ /dev/null
@@ -1,25 +0,0 @@
-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-/**
- * [SocketInputStream] makes it possible to stream over data received
- * from a [Socket].
- */
-abstract class SocketInputStream implements InputStream {
-  /**
-   * Create a [SocketInputStream] for streaming from a [Socket].
-   */
-  factory SocketInputStream(Socket socket) => new _SocketInputStream(socket);
-}
-
-/**
- * [SocketOutputStream] makes it possible to stream data to a
- * [Socket].
- */
-abstract class SocketOutputStream implements OutputStream {
-  /**
-   * Create a [SocketOutputStream] for streaming to a [Socket].
-   */
-  factory SocketOutputStream(Socket socket) => new _SocketOutputStream(socket);
-}