Remove explicit interface versions of dartdoc files.

lib/html/doc/interface/Worker.dartdoc

Index: lib/html/doc/interface/Worker.dartdoc
diff --git a/lib/html/doc/interface/Worker.dartdoc b/lib/html/doc/interface/Worker.dartdoc
deleted file mode 100644
index acc33569a7046f7509ddb8a60a3e5e782c01b8c5..0000000000000000000000000000000000000000
--- a/lib/html/doc/interface/Worker.dartdoc
+++ /dev/null
@@ -1,32 +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 Worker
-interface Worker extends AbstractWorker default _WorkerFactoryProvider {
-
-  Worker(String scriptUrl);
-
-  /**
-   * @domName EventTarget.addEventListener, EventTarget.removeEventListener, EventTarget.dispatchEvent
-   */
-  WorkerEvents get on();
-
-  /** @domName Worker.postMessage */
-  void postMessage(/*SerializedScriptValue*/ message, [List messagePorts]);
-
-  /** @domName Worker.terminate */
-  void terminate();
-
-  /** @domName Worker.webkitPostMessage */
-  void webkitPostMessage(/*SerializedScriptValue*/ message, [List messagePorts]);
-}
-
-interface WorkerEvents extends AbstractWorkerEvents {
-
-  EventListenerList get message();
-}