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

runtime/observatory/tests/service/debugging_test.dart

 // Copyright (c) 2015, 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
 
 import 'package:observatory/service_io.dart';
 import 'package:unittest/unittest.dart';
 import 'test_helper.dart';
 import 'dart:async';
 
 void helper(i) {
   print(i);
 }
 
@@ skipping 163 matching lines @@
     expect(bpt.script.name, equals('debugging_test.dart'));
     expect(bpt.tokenPos, equals(29));
     expect(isolate.breakpoints.length, equals(1));
     return completer.future;  // Wait for breakpoint events.
   });
 },
 
 ];
 
 main(args) => runIsolateTests(args, tests, testeeConcurrent: testFunction);