Get rid of all the library tags.

test/serve/does_not_crash_if_an_unused_dart_file_has_a_syntax_error_test.dart

Index: test/serve/does_not_crash_if_an_unused_dart_file_has_a_syntax_error_test.dart
diff --git a/test/serve/does_not_crash_if_an_unused_dart_file_has_a_syntax_error_test.dart b/test/serve/does_not_crash_if_an_unused_dart_file_has_a_syntax_error_test.dart
index c246c740a2adb7a3a897fd5450225d2b4408a28b..dd52dd2a44476e4418f9339a221e4cfb57017d14 100644
--- a/test/serve/does_not_crash_if_an_unused_dart_file_has_a_syntax_error_test.dart
+++ b/test/serve/does_not_crash_if_an_unused_dart_file_has_a_syntax_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 '../descriptor.dart' as d;
 import '../test_pub.dart';
 import 'utils.dart';