Remove explicit interface versions of dartdoc files.

lib/html/doc/interface/SpeechGrammarList.dartdoc

Index: lib/html/doc/interface/SpeechGrammarList.dartdoc
diff --git a/lib/html/doc/interface/SpeechGrammarList.dartdoc b/lib/html/doc/interface/SpeechGrammarList.dartdoc
deleted file mode 100644
index b6abf045f847a80001d0c1386a3e4864c4ffebec..0000000000000000000000000000000000000000
--- a/lib/html/doc/interface/SpeechGrammarList.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 SpeechGrammarList
-interface SpeechGrammarList default _SpeechGrammarListFactoryProvider {
-
-  SpeechGrammarList();
-
-  /** @domName SpeechGrammarList.length */
-  final int length;
-
-  /** @domName SpeechGrammarList.addFromString */
-  void addFromString(String string, [num weight]);
-
-  /** @domName SpeechGrammarList.addFromUri */
-  void addFromUri(String src, [num weight]);
-
-  /** @domName SpeechGrammarList.item */
-  SpeechGrammar item(int index);
-}