Get rid of all the library tags.

test/serve/web_socket/serve_directory_overlapping_test.dart

Index: test/serve/web_socket/serve_directory_overlapping_test.dart
diff --git a/test/serve/web_socket/serve_directory_overlapping_test.dart b/test/serve/web_socket/serve_directory_overlapping_test.dart
index 51e7622c811010d7d0b11ca8e07747f6a7f1fe4a..ed5f36a56513ed0bbab0d73d3255ed27fdf65b3e 100644
--- a/test/serve/web_socket/serve_directory_overlapping_test.dart
+++ b/test/serve/web_socket/serve_directory_overlapping_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:path/path.dart' as path;
 import 'package:scheduled_test/scheduled_test.dart';