Remove some more library directives

pkg/analysis_server/test/services/completion/dart/test_all.dart

Index: pkg/analysis_server/test/services/completion/dart/test_all.dart
diff --git a/pkg/analysis_server/test/services/completion/dart/test_all.dart b/pkg/analysis_server/test/services/completion/dart/test_all.dart
index 8fa0c51160984a8df39fd147b2bb067b9efbb919..c01b36c0585222386b8266907b037da3720e836e 100644
--- a/pkg/analysis_server/test/services/completion/dart/test_all.dart
+++ b/pkg/analysis_server/test/services/completion/dart/test_all.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.completion.dart;
-
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import 'arglist_contributor_test.dart' as arglist_test;