remove serialization. it's moved to github

pkg/serialization/test/no_library_test.dart

Index: pkg/serialization/test/no_library_test.dart
diff --git a/pkg/serialization/test/no_library_test.dart b/pkg/serialization/test/no_library_test.dart
deleted file mode 100644
index 33eeda1863ad093a555a4bf50fb3e954d8fc91a0..0000000000000000000000000000000000000000
--- a/pkg/serialization/test/no_library_test.dart
+++ /dev/null
@@ -1,22 +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.
-
-import 'package:serialization/serialization.dart';
-import 'package:unittest/unittest.dart';
-
-class Thing {
-  var name;
-}
-
-void main() {
-
-  test("Serializing something without a library directive", () {
-    var thing = new Thing()..name = 'testThing';
-    var s = new Serialization()
-      ..addRuleFor(Thing);
-    var serialized = s.write(thing);
-    var newThing = s.read(serialized);
-    expect(thing.name, newThing.name);
-  });
-}