Get rid of all the library tags.

lib/src/http.dart

 // Copyright (c) 2012, 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.
 
 /// Helpers for dealing with HTTP.
-library pub.http;
-
 import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 
 import 'package:http/http.dart' as http;
 import 'package:http_throttle/http_throttle.dart';
 import 'package:stack_trace/stack_trace.dart';
 
 import 'log.dart' as log;
 import 'oauth2.dart' as oauth2;
@@ skipping 211 matching lines @@
 
 /// Exception thrown when an HTTP operation fails.
 class PubHttpException implements Exception {
   final http.Response response;
 
   const PubHttpException(this.response);
 
   String toString() => 'HTTP error ${response.statusCode}: '
       '${response.reasonPhrase}';
 }