Get rid of all the library tags.

test/real_version_test.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.
 
-library pub_tests;
-
 import 'dart:io';
 
 import 'package:path/path.dart' as path;
 import 'package:pub/src/exit_codes.dart' as exit_codes;
 import 'package:pub/src/sdk.dart' as sdk;
 import 'package:scheduled_test/scheduled_process.dart';
 import 'package:scheduled_test/scheduled_test.dart';
 
 import 'test_pub.dart';
 
@@ skipping 11 matching lines @@
   integration('parse the real SDK "version" file', () {
     // Get the path to the pub binary in the SDK.
     var pubPath = path.join(sdk.rootDirectory, 'bin',
         Platform.operatingSystem == "windows" ? "pub.bat" : "pub");
 
     var pub = new ScheduledProcess.start(pubPath, ['version']);
     pub.stdout.expect(startsWith("Pub"));
     pub.shouldExit(exit_codes.SUCCESS);
   });
 }