Remove explicit interface versions of dartdoc files.

lib/html/doc/interface/IDBDatabase.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 IDBDatabase
-interface IDBDatabase extends EventTarget {
-
-  /**
-   * @domName EventTarget.addEventListener, EventTarget.removeEventListener, EventTarget.dispatchEvent
-   */
-  IDBDatabaseEvents get on();
-
-  /** @domName IDBDatabase.name */
-  final String name;
-
-  /** @domName IDBDatabase.objectStoreNames */
-  final List<String> objectStoreNames;
-
-  /** @domName IDBDatabase.version */
-  final String version;
-
-  /** @domName IDBDatabase.addEventListener */
-  void $dom_addEventListener(String type, EventListener listener, [bool useCapture]);
-
-  /** @domName IDBDatabase.close */
-  void close();
-
-  /** @domName IDBDatabase.createObjectStore */
-  IDBObjectStore createObjectStore(String name, [Map options]);
-
-  /** @domName IDBDatabase.deleteObjectStore */
-  void deleteObjectStore(String name);
-
-  /** @domName IDBDatabase.dispatchEvent */
-  bool $dom_dispatchEvent(Event evt);
-
-  /** @domName IDBDatabase.removeEventListener */
-  void $dom_removeEventListener(String type, EventListener listener, [bool useCapture]);
-
-  /** @domName IDBDatabase.setVersion */
-  IDBVersionChangeRequest setVersion(String version);
-
-  /** @domName IDBDatabase.transaction */
-  IDBTransaction transaction(storeName_OR_storeNames, String mode);
-}
-
-interface IDBDatabaseEvents extends Events {
-
-  EventListenerList get abort();
-
-  EventListenerList get error();
-
-  EventListenerList get versionChange();
-}