Get rid of all the library tags.

lib/src/backend/live_test_controller.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.
 
-library test.backend.live_test_controller;
-
 import 'dart:async';
 import 'dart:collection';
 
 import 'package:stack_trace/stack_trace.dart';
 
 import 'group.dart';
 import 'live_test.dart';
 import 'state.dart';
 import 'suite.dart';
 import 'test.dart';
@@ skipping 182 matching lines @@
 
     if (_runCalled) {
       _onClose();
     } else {
       completer.complete();
     }
 
     return completer.future;
   }
 }