Remove explicit interface versions of dartdoc files.

lib/html/doc/interface/SpeechRecognition.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 SpeechRecognition
-interface SpeechRecognition extends EventTarget default _SpeechRecognitionFactoryProvider {
-
-  SpeechRecognition();
-
-  /**
-   * @domName EventTarget.addEventListener, EventTarget.removeEventListener, EventTarget.dispatchEvent
-   */
-  SpeechRecognitionEvents get on();
-
-  /** @domName SpeechRecognition.continuous */
-  bool continuous;
-
-  /** @domName SpeechRecognition.grammars */
-  SpeechGrammarList grammars;
-
-  /** @domName SpeechRecognition.lang */
-  String lang;
-
-  /** @domName SpeechRecognition.abort */
-  void abort();
-
-  /** @domName SpeechRecognition.addEventListener */
-  void $dom_addEventListener(String type, EventListener listener, [bool useCapture]);
-
-  /** @domName SpeechRecognition.dispatchEvent */
-  bool $dom_dispatchEvent(Event evt);
-
-  /** @domName SpeechRecognition.removeEventListener */
-  void $dom_removeEventListener(String type, EventListener listener, [bool useCapture]);
-
-  /** @domName SpeechRecognition.start */
-  void start();
-
-  /** @domName SpeechRecognition.stop */
-  void stop();
-}
-
-interface SpeechRecognitionEvents extends Events {
-
-  EventListenerList get audioEnd();
-
-  EventListenerList get audioStart();
-
-  EventListenerList get end();
-
-  EventListenerList get error();
-
-  EventListenerList get noMatch();
-
-  EventListenerList get result();
-
-  EventListenerList get resultDeleted();
-
-  EventListenerList get soundEnd();
-
-  EventListenerList get soundStart();
-
-  EventListenerList get speechEnd();
-
-  EventListenerList get speechStart();
-
-  EventListenerList get start();
-}