Remove some more library directives

pkg/analysis_server/benchmark/perf/benchmark_angular.dart

Index: pkg/analysis_server/benchmark/perf/benchmark_angular.dart
diff --git a/pkg/analysis_server/benchmark/perf/benchmark_angular.dart b/pkg/analysis_server/benchmark/perf/benchmark_angular.dart
index d1effe1fd1db5685ec09b618302f6227e232c147..c93138d86badef285f4673c451238de0225c74f2 100644
--- a/pkg/analysis_server/benchmark/perf/benchmark_angular.dart
+++ b/pkg/analysis_server/benchmark/perf/benchmark_angular.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 server.performance.local;
-
 import 'dart:async';
 
 import 'benchmark_scenario.dart';