Remove some more library directives

pkg/analysis_server/test/services/search/hierarchy_test.dart

Index: pkg/analysis_server/test/services/search/hierarchy_test.dart
diff --git a/pkg/analysis_server/test/services/search/hierarchy_test.dart b/pkg/analysis_server/test/services/search/hierarchy_test.dart
index d1a02bef8d96571ddc729a7611fbbe41d2890c5f..6c47fa766a0df06efcd165fe62ca8f0ff053855e 100644
--- a/pkg/analysis_server/test/services/search/hierarchy_test.dart
+++ b/pkg/analysis_server/test/services/search/hierarchy_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 test.services.src.search.hierarchy;
-
 import 'dart:async';
 
 import 'package:analysis_server/src/services/search/hierarchy.dart';