Revert 28422

runtime/bin/vmservice/client/packages/observatory/src/observatory_elements/observatory_application.dart

Index: runtime/bin/vmservice/client/packages/observatory/src/observatory_elements/observatory_application.dart
diff --git a/runtime/bin/vmservice/client/packages/observatory/src/observatory_elements/observatory_application.dart b/runtime/bin/vmservice/client/packages/observatory/src/observatory_elements/observatory_application.dart
deleted file mode 100644
index dfafcbd94a25a4326582ed2a1c512a8edb0bfbac..0000000000000000000000000000000000000000
--- a/runtime/bin/vmservice/client/packages/observatory/src/observatory_elements/observatory_application.dart
+++ /dev/null
@@ -1,20 +0,0 @@
-// Copyright (c) 2013, 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.
-
-library observatory_application_element;
-
-import 'observatory_element.dart';
-import 'package:observatory/observatory.dart';
-import 'package:polymer/polymer.dart';
-
-/// Main application tag. Responsible for instantiating an instance of
-/// [ObservatoryApplication] which is passed declaratively to all child
-/// elements.
-@CustomTag('observatory-application')
-class ObservatoryApplicationElement extends ObservatoryElement {
-  void created() {
-    super.created();
-    app = new ObservatoryApplication();
-  }
-}