Remove explicit interface versions of dartdoc files.

lib/html/doc/interface/WorkerNavigator.dartdoc

Index: lib/html/doc/interface/WorkerNavigator.dartdoc
diff --git a/lib/html/doc/interface/WorkerNavigator.dartdoc b/lib/html/doc/interface/WorkerNavigator.dartdoc
deleted file mode 100644
index 0e2afa3414da8fde04f0150ab82c04571ec3f329..0000000000000000000000000000000000000000
--- a/lib/html/doc/interface/WorkerNavigator.dartdoc
+++ /dev/null
@@ -1,26 +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 WorkerNavigator
-interface WorkerNavigator {
-
-  /** @domName WorkerNavigator.appName */
-  final String appName;
-
-  /** @domName WorkerNavigator.appVersion */
-  final String appVersion;
-
-  /** @domName WorkerNavigator.onLine */
-  final bool onLine;
-
-  /** @domName WorkerNavigator.platform */
-  final String platform;
-
-  /** @domName WorkerNavigator.userAgent */
-  final String userAgent;
-}