Revert "Build Observatory with runtime"

runtime/observatory/test/bad_web_socket_address_test.dart

Index: runtime/observatory/test/bad_web_socket_address_test.dart
diff --git a/runtime/observatory/test/bad_web_socket_address_test.dart b/runtime/observatory/test/bad_web_socket_address_test.dart
deleted file mode 100644
index 65de6cfab64c19ee0f4c6ce840f8777f8a298e65..0000000000000000000000000000000000000000
--- a/runtime/observatory/test/bad_web_socket_address_test.dart
+++ /dev/null
@@ -1,18 +0,0 @@
-// 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.
-
-import "package:observatory/service_io.dart";
-import 'package:unittest/unittest.dart';
-
-void testBadWebSocket() {
-  var vm = new WebSocketVM(new WebSocketVMTarget('ws://karatekid/ws'));
-  vm.load().catchError(expectAsync((error) {
-        expect(error is ServiceException, isTrue);
-      }));
-}
-
-main() {
-  test('bad web socket address', testBadWebSocket);
-}
-