Removed Polymer from Observatory deps

packages/polymer/test/when_polymer_ready_test.dart

-// 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 polymer.test.when_polymer_ready_test;
-
-import 'dart:async';
-import 'dart:html';
-
-import 'package:polymer/polymer.dart';
-import 'package:unittest/unittest.dart';
-import 'package:unittest/html_config.dart';
-
-final Completer done = new Completer();
-
-@CustomTag('x-a')
-class XA extends PolymerElement {
-  XA.created() : super.created();
-}
-
-main() {
-  useHtmlConfiguration();
-
-  test('whenPolymerReady functions get called when polymer is ready', () {
-    expect(querySelector('x-a') is XA, isFalse);
-    initPolymer();
-    return done.future;
-  });
-}
-
-@whenPolymerReady
-void whenReady() {
-  expect(querySelector('x-a') is XA, isTrue);
-  done.complete();
-}