Get rid of all the library tags.

test/dependency_computer/error_test.dart

Index: test/dependency_computer/error_test.dart
diff --git a/test/dependency_computer/error_test.dart b/test/dependency_computer/error_test.dart
index 8451af3c0995274c885c4f3256d0e23d77103ac0..48e19fb88692ac329421b9e8851269afdeedde6d 100644
--- a/test/dependency_computer/error_test.dart
+++ b/test/dependency_computer/error_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:analyzer/analyzer.dart';
 import 'package:pub/src/exceptions.dart';
 import 'package:scheduled_test/scheduled_test.dart';