Get rid of all the library tags.

test/io/utils.dart

 // 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.
 
-library http.test.io_utils;
-
 import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 
 import 'package:http/http.dart';
 import 'package:http/src/utils.dart';
 import 'package:unittest/unittest.dart';
 
 export '../utils.dart';
 
@@ skipping 125 matching lines @@
 const isSocketException = const _SocketException();
 
 /// A matcher for functions that throw SocketException.
 const Matcher throwsSocketException =
     const Throws(isSocketException);
 
 class _SocketException extends TypeMatcher {
   const _SocketException() : super("SocketException");
   bool matches(item, Map matchState) => item is SocketException;
 }