Removed Polymer from Observatory deps

packages/polymer/e2e_test/canonicalization/test/dir/dev1_test.dart

Index: packages/polymer/e2e_test/canonicalization/test/dir/dev1_test.dart
diff --git a/packages/polymer/e2e_test/canonicalization/test/dir/dev1_test.dart b/packages/polymer/e2e_test/canonicalization/test/dir/dev1_test.dart
deleted file mode 100644
index 1016c9d11b8c5a32ef3dfc7271733e6153f1082f..0000000000000000000000000000000000000000
--- a/packages/polymer/e2e_test/canonicalization/test/dir/dev1_test.dart
+++ /dev/null
@@ -1,8 +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.
-
-/// Tests canonicalization at deployment time from a subdir.
-library canonicalization.test.dir.dev1_test;
-
-export 'dev_common.dart';