Remove explicit interface versions of dartdoc files.

lib/html/doc/interface/FileReaderSync.dartdoc

Index: lib/html/doc/interface/FileReaderSync.dartdoc
diff --git a/lib/html/doc/interface/FileReaderSync.dartdoc b/lib/html/doc/interface/FileReaderSync.dartdoc
deleted file mode 100644
index 27af6baa1b72fbb31095e4a6ef483b869c0bd219..0000000000000000000000000000000000000000
--- a/lib/html/doc/interface/FileReaderSync.dartdoc
+++ /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.
-
-// WARNING:
-//   This file contains documentation that is merged into the real source.
-//   Do not make code changes here.
-
-/// @domName FileReaderSync
-interface FileReaderSync default _FileReaderSyncFactoryProvider {
-
-  FileReaderSync();
-
-  /** @domName FileReaderSync.readAsArrayBuffer */
-  ArrayBuffer readAsArrayBuffer(Blob blob);
-
-  /** @domName FileReaderSync.readAsBinaryString */
-  String readAsBinaryString(Blob blob);
-
-  /** @domName FileReaderSync.readAsDataURL */
-  String readAsDataURL(Blob blob);
-
-  /** @domName FileReaderSync.readAsText */
-  String readAsText(Blob blob, [String encoding]);
-}