Remove some more library directives

pkg/analysis_server/test/operation/operation_test.dart

Index: pkg/analysis_server/test/operation/operation_test.dart
diff --git a/pkg/analysis_server/test/operation/operation_test.dart b/pkg/analysis_server/test/operation/operation_test.dart
index 5161c16ba12defb606156dff8f8580e77699a451..e6d6e5a61d2fcb926f2ad4b5371a10d6b54eb33e 100644
--- a/pkg/analysis_server/test/operation/operation_test.dart
+++ b/pkg/analysis_server/test/operation/operation_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.operation;
-
 import 'package:analysis_server/src/operation/operation.dart';
 import 'package:test/test.dart';