Remove explicit interface versions of dartdoc files.

lib/html/doc/interface/JavaScriptAudioNode.dartdoc

Index: lib/html/doc/interface/JavaScriptAudioNode.dartdoc
diff --git a/lib/html/doc/interface/JavaScriptAudioNode.dartdoc b/lib/html/doc/interface/JavaScriptAudioNode.dartdoc
deleted file mode 100644
index 946eac306ad39e89a99b956a6c3ec9a22212e758..0000000000000000000000000000000000000000
--- a/lib/html/doc/interface/JavaScriptAudioNode.dartdoc
+++ /dev/null
@@ -1,24 +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 JavaScriptAudioNode
-interface JavaScriptAudioNode extends AudioNode, EventTarget {
-
-  /**
-   * @domName EventTarget.addEventListener, EventTarget.removeEventListener, EventTarget.dispatchEvent
-   */
-  JavaScriptAudioNodeEvents get on();
-
-  /** @domName JavaScriptAudioNode.bufferSize */
-  final int bufferSize;
-}
-
-interface JavaScriptAudioNodeEvents extends Events {
-
-  EventListenerList get audioProcess();
-}