Get rid of all the library tags.

test/transformer/exclusion/exclude_asset_glob_test.dart

Index: test/transformer/exclusion/exclude_asset_glob_test.dart
diff --git a/test/transformer/exclusion/exclude_asset_glob_test.dart b/test/transformer/exclusion/exclude_asset_glob_test.dart
index 904e608060bcefc9f304c31e23352d7eccdd7a76..28c2a982dbadcc5ac892641734aae2a717f7d902 100644
--- a/test/transformer/exclusion/exclude_asset_glob_test.dart
+++ b/test/transformer/exclusion/exclude_asset_glob_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';
 import '../../serve/utils.dart';