Kill service_test.cc tests in favor of dart tests for the service protocol.

runtime/observatory/tests/service/weak_properties_test.dart

Index: runtime/observatory/tests/service/weak_properties_test.dart
diff --git a/runtime/observatory/tests/service/weak_properties_test.dart b/runtime/observatory/tests/service/weak_properties_test.dart
index c37c38fd2f58dd2ee50c7e94a4598d745190f8dc..a7be444896a83e3aeb34f173fc6e225cab795ac9 100644
--- a/runtime/observatory/tests/service/weak_properties_test.dart
+++ b/runtime/observatory/tests/service/weak_properties_test.dart
@@ -1,7 +1,7 @@
 // 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.
-// VMOptions=--compile-all --error_on_bad_type --error_on_bad_override --checked
+// VMOptions=--compile-all --error_on_bad_type --error_on_bad_override
 
 library vm_references_test;