Remove more libraries directives from server

pkg/analysis_server/lib/src/analysis_logger.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 analysis.logger;
-
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analyzer/exception/exception.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:logging/logging.dart' as logging;
 
 /**
  * Instances of the class [AnalysisLogger] translate from the analysis engine's
  * API to the logging package's API.
  */
 class AnalysisLogger implements Logger {
@@ skipping 31 matching lines @@
 
   @override
   void logInformation(String message, [CaughtException exception]) {
     if (exception == null) {
       baseLogger.info(message);
     } else {
       baseLogger.info(message, exception.exception, exception.stackTrace);
     }
   }
 }