Get rid of all the library tags.

test/cache/add/all_adds_all_matching_versions_test.dart

Index: test/cache/add/all_adds_all_matching_versions_test.dart
diff --git a/test/cache/add/all_adds_all_matching_versions_test.dart b/test/cache/add/all_adds_all_matching_versions_test.dart
index db9cd2f8dd94f87d0f724ce3185c28dc2085fe25..d4e03e83d865196f82b64b66995556ffd1990244 100644
--- a/test/cache/add/all_adds_all_matching_versions_test.dart
+++ b/test/cache/add/all_adds_all_matching_versions_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 '../../descriptor.dart' as d;
 import '../../test_pub.dart';