Removed Polymer from Observatory deps

packages/polymer/e2e_test/experimental_boot/test/import_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 experimental_boot.test.import_test;
-
-import 'package:unittest/unittest.dart';
-import 'package:unittest/html_config.dart';
-import 'package:polymer/polymer.dart';
-
-import 'package:experimental_boot/a.dart' show a;
-import 'packages/experimental_boot/b.dart' show b;
-import 'package:experimental_boot/c.dart' show c;
-import 'package:experimental_boot/d.dart' as d1 show d;
-import 'packages/experimental_boot/d.dart' as d2 show d;
-
-@initMethod
-main() {
-  useHtmlConfiguration();
-
-  setUp(() => Polymer.onReady);
-
-  test('canonicalization with experimental bootstrap', () {
-    expect(a, 1,
-        reason: 'deploy picks the "package:" url as the canonical url for '
-        'script tags.');
-
-    // We shouldn't be using 'packages/' above, so that's ok.
-    expect(b, 0,
-        reason: 'we pick the "package:" url as the canonical url for script '
-        'tags.');
-    expect(c, 2, reason: 'c was always imported with "package:" urls.');
-    expect(d1.d, 2, reason: 'both a and b are loaded using package: urls');
-    expect(d2.d, 0, reason: 'both a and b are loaded using package: urls');
-  });
-}