Get rid of all the library tags.

lib/src/util/remote_exception.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.util.remote_exception;
-
 import 'dart:async';
 import 'dart:isolate';
 
 import 'package:stack_trace/stack_trace.dart';
 
 import '../frontend/expect.dart';
 
 /// An exception that was thrown remotely.
 ///
 /// This could be an exception thrown in a different isolate, a different
@@ skipping 85 matching lines @@
   _RemoteTestFailure(String message, String type, String toString)
       : super._(message, type, toString);
 }
 
 /// A subclass of [RemoteException] that implements [IsolateSpawnException].
 class _RemoteIsolateSpawnException extends RemoteException
     implements IsolateSpawnException {
   _RemoteIsolateSpawnException(String message, String type, String toString)
       : super._(message, type, toString);
 }