Removed Polymer from Observatory deps

packages/polymer_expressions/test/all_tests.dart

Index: packages/polymer_expressions/test/all_tests.dart
diff --git a/packages/polymer_expressions/test/all_tests.dart b/packages/polymer_expressions/test/all_tests.dart
deleted file mode 100644
index dfe6a3a1728a8bb3e47d9714496420399bffcf13..0000000000000000000000000000000000000000
--- a/packages/polymer_expressions/test/all_tests.dart
+++ /dev/null
@@ -1,17 +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 all_tests;
-
-import 'eval_test.dart' as eval;
-import 'parser_test.dart' as parser;
-import 'tokenizer_test.dart' as tokenizer;
-import 'visitor_test.dart' as visitor;
-
-main() {
-  eval.main();
-  parser.main();
-  tokenizer.main();
-  visitor.main();
-}