Get rid of all the library tags.

test/dependency_computer/import_dependencies_test.dart

Index: test/dependency_computer/import_dependencies_test.dart
diff --git a/test/dependency_computer/import_dependencies_test.dart b/test/dependency_computer/import_dependencies_test.dart
index 8f8452ceb837cca9c303a962011f1fdfc2ac0fad..35a66af6ae2ce8130bf2249a0e24ce46c490c455 100644
--- a/test/dependency_computer/import_dependencies_test.dart
+++ b/test/dependency_computer/import_dependencies_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 'utils.dart';