Remove more libraries directives from server

pkg/analysis_server/lib/src/services/completion/dart/type_member_contributor.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // 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.completion.contributor.dart.type_member;
-
 import 'dart:async';
 import 'dart:collection';
 
 import 'package:analysis_server/src/ide_options.dart';
 import 'package:analysis_server/src/provisional/completion/dart/completion_dart.dart';
 import 'package:analysis_server/src/services/completion/dart/local_declaration_visitor.dart';
 import 'package:analysis_server/src/services/completion/dart/suggestion_builder.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
@@ skipping 389 matching lines @@
       // in the reverse order.
       typesToVisit.addAll(nextType.interfaces);
       if (nextType.superclass != null) {
         typesToVisit.add(nextType.superclass);
       }
       typesToVisit.addAll(nextType.mixins);
     }
     return result;
   }
 }