Get rid of all the library tags.

test/get/git/check_out_unfetched_revision_of_cached_repo_test.dart

Index: test/get/git/check_out_unfetched_revision_of_cached_repo_test.dart
diff --git a/test/get/git/check_out_unfetched_revision_of_cached_repo_test.dart b/test/get/git/check_out_unfetched_revision_of_cached_repo_test.dart
index af195930a761f0d5cccc2867bf99c4226e8f5091..3caa5570e56b86a94944a153c59933ae99902838 100644
--- a/test/get/git/check_out_unfetched_revision_of_cached_repo_test.dart
+++ b/test/get/git/check_out_unfetched_revision_of_cached_repo_test.dart
@@ -2,8 +2,6 @@
 // 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 'package:path/path.dart' as p;
 import 'package:pub/src/io.dart';
 import 'package:scheduled_test/scheduled_test.dart';