Get rid of all the library tags.

test/directory_listing_test.dart

 // Copyright (c) 2015, 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 shelf_static.directory_listing_test;
-
 import 'dart:io';
 
 import 'package:scheduled_test/descriptor.dart' as d;
 import 'package:scheduled_test/scheduled_test.dart';
 import 'package:shelf_static/shelf_static.dart';
 
 import 'test_util.dart';
 
 void main() {
   setUp(() {
@@ skipping 73 matching lines @@
         var handler = createStaticHandler(d.defaultRoot, listDirectories: true);
 
         return makeRequest(handler, '/files/empty subfolder/').then((response) {
           expect(response.statusCode, HttpStatus.OK);
           expect(response.readAsString(), completes);
         });
       });
     });
   });
 }