Remove explicit interface versions of dartdoc files.

lib/html/doc/interface/IDBTransaction.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 IDBTransaction
-interface IDBTransaction extends EventTarget {
-
-  /**
-   * @domName EventTarget.addEventListener, EventTarget.removeEventListener, EventTarget.dispatchEvent
-   */
-  IDBTransactionEvents get on();
-
-  static final int READ_ONLY = 0;
-
-  static final int READ_WRITE = 1;
-
-  static final int VERSION_CHANGE = 2;
-
-  /** @domName IDBTransaction.db */
-  final IDBDatabase db;
-
-  /** @domName IDBTransaction.error */
-  final DOMError error;
-
-  /** @domName IDBTransaction.mode */
-  final String mode;
-
-  /** @domName IDBTransaction.abort */
-  void abort();
-
-  /** @domName IDBTransaction.addEventListener */
-  void $dom_addEventListener(String type, EventListener listener, [bool useCapture]);
-
-  /** @domName IDBTransaction.dispatchEvent */
-  bool $dom_dispatchEvent(Event evt);
-
-  /** @domName IDBTransaction.objectStore */
-  IDBObjectStore objectStore(String name);
-
-  /** @domName IDBTransaction.removeEventListener */
-  void $dom_removeEventListener(String type, EventListener listener, [bool useCapture]);
-}
-
-interface IDBTransactionEvents extends Events {
-
-  EventListenerList get abort();
-
-  EventListenerList get complete();
-
-  EventListenerList get error();
-}