Remove explicit interface versions of dartdoc files.

lib/html/doc/interface/EntrySync.dartdoc

-// 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.
-
-// WARNING:
-//   This file contains documentation that is merged into the real source.
-//   Do not make code changes here.
-
-/// @domName EntrySync
-interface EntrySync {
-
-  /** @domName EntrySync.filesystem */
-  final DOMFileSystemSync filesystem;
-
-  /** @domName EntrySync.fullPath */
-  final String fullPath;
-
-  /** @domName EntrySync.isDirectory */
-  final bool isDirectory;
-
-  /** @domName EntrySync.isFile */
-  final bool isFile;
-
-  /** @domName EntrySync.name */
-  final String name;
-
-  /** @domName EntrySync.copyTo */
-  EntrySync copyTo(DirectoryEntrySync parent, String name);
-
-  /** @domName EntrySync.getMetadata */
-  Metadata getMetadata();
-
-  /** @domName EntrySync.getParent */
-  EntrySync getParent();
-
-  /** @domName EntrySync.moveTo */
-  EntrySync moveTo(DirectoryEntrySync parent, String name);
-
-  /** @domName EntrySync.remove */
-  void remove();
-
-  /** @domName EntrySync.toURL */
-  String toURL();
-}