Removed Polymer from Observatory deps

packages/polymer/test/web_components_less_test.dart

-// Copyright (c) 2014, 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 polymer.test.web.web_components_less_test;
-
-import 'dart:html';
-import 'dart:js';
-import 'package:polymer/polymer.dart';
-import 'package:unittest/html_config.dart';
-import 'package:unittest/unittest.dart';
-
-int elementsReadied = 0;
-
-@CustomTag('x-import')
-class XImport extends PolymerElement {
-  XImport.created() : super.created();
-
-  ready() {
-    elementsReadied++;
-  }
-}
-
-@CustomTag('x-main')
-class XMain extends PolymerElement {
-  XMain.created() : super.created();
-
-  ready() {
-    elementsReadied++;
-  }
-}
-
-main() => initPolymer().then((zone) => zone.run(() {
-  useHtmlConfiguration();
-
-  setUp(() => Polymer.onReady);
-
-  test('web-components-less configuration', () {
-    var jsDoc = new JsObject.fromBrowserObject(document);
-    var htmlImports = context['HTMLImports'];
-
-    if (!ShadowRoot.supported || !(new LinkElement()).supportsImport) return;
-
-    expect(elementsReadied, 2, reason: 'imported elements upgraded');
-  });
-}));