Remove explicit interface versions of dartdoc files.

lib/html/doc/interface/FileEntrySync.dartdoc

Index: lib/html/doc/interface/FileEntrySync.dartdoc
diff --git a/lib/html/doc/interface/FileEntrySync.dartdoc b/lib/html/doc/interface/FileEntrySync.dartdoc
deleted file mode 100644
index a76d4c7f92fbea64f2fd291053d65a3d3b3dc0d2..0000000000000000000000000000000000000000
--- a/lib/html/doc/interface/FileEntrySync.dartdoc
+++ /dev/null
@@ -1,17 +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.
-
-// WARNING:
-//   This file contains documentation that is merged into the real source.
-//   Do not make code changes here.
-
-/// @domName FileEntrySync
-interface FileEntrySync extends EntrySync {
-
-  /** @domName FileEntrySync.createWriter */
-  FileWriterSync createWriter();
-
-  /** @domName FileEntrySync.file */
-  File file();
-}