Remove more libraries directives from server

pkg/analysis_server/lib/src/services/correction/flutter_util.dart

Index: pkg/analysis_server/lib/src/services/correction/flutter_util.dart
diff --git a/pkg/analysis_server/lib/src/services/correction/flutter_util.dart b/pkg/analysis_server/lib/src/services/correction/flutter_util.dart
index 3f866b107802c28da6299ae14843dbc1ccfe129c..fb21d070e007fa3383a3e9f7cb33b3d95b884097 100644
--- a/pkg/analysis_server/lib/src/services/correction/flutter_util.dart
+++ b/pkg/analysis_server/lib/src/services/correction/flutter_util.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 services.src.correction.flutter_util;
-
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';