Remove more libraries directives from server

pkg/analysis_server/lib/src/domains/analysis/navigation.dart

Index: pkg/analysis_server/lib/src/domains/analysis/navigation.dart
diff --git a/pkg/analysis_server/lib/src/domains/analysis/navigation.dart b/pkg/analysis_server/lib/src/domains/analysis/navigation.dart
index 73f8b73b65969fb14460ea0bbc15dcf686ac3e99..5bde26f2c319cc610d8780b801ab876c60e8511b 100644
--- a/pkg/analysis_server/lib/src/domains/analysis/navigation.dart
+++ b/pkg/analysis_server/lib/src/domains/analysis/navigation.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 domains.analysis.navigation;
-
 import 'dart:collection';
 
 import 'package:analysis_server/plugin/analysis/navigation/navigation_core.dart';