Remove some more library directives

pkg/analysis_server/test/channel/byte_stream_channel_test.dart

Index: pkg/analysis_server/test/channel/byte_stream_channel_test.dart
diff --git a/pkg/analysis_server/test/channel/byte_stream_channel_test.dart b/pkg/analysis_server/test/channel/byte_stream_channel_test.dart
index e6e92e58693167dff11d429a1cd7ce81252c37da..94cdc812e141a8d17f5efb50b72de3612629a97c 100644
--- a/pkg/analysis_server/test/channel/byte_stream_channel_test.dart
+++ b/pkg/analysis_server/test/channel/byte_stream_channel_test.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 test.channel.byte_stream;
-
 import 'dart:async';
 import 'dart:convert';
 import 'dart:io';