Remove unused method and field from DartSdkManager

pkg/analysis_server/test/analysis_abstract.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 test.domain.analysis.abstract;
 
 import 'dart:async';
 
 import 'package:analysis_server/plugin/protocol/protocol.dart';
 import 'package:analysis_server/src/analysis_server.dart';
@@ skipping 106 matching lines @@
     plugins.add(dartCompletionPlugin);
     plugins.add(linterPlugin);
     plugins.add(linterServerPlugin);
     addServerPlugins(plugins);
     //
     // Process plugins
     //
     ExtensionManager manager = new ExtensionManager();
     manager.processPlugins(plugins);
     //
+    // Create an SDK in the mock file system.
+    //
+    new MockSdk(resourceProvider: resourceProvider);
+    //
     // Create server
     //
-    MockSdk sdk = new MockSdk(resourceProvider: resourceProvider);
     return new AnalysisServer(
         serverChannel,
         resourceProvider,
         packageMapProvider,
         index,
         serverPlugin,
         new AnalysisServerOptions(),
-        new DartSdkManager(
-            resourceProvider.convertPath('/'), false, (_) => sdk),
+        new DartSdkManager(resourceProvider.convertPath('/'), false),
         InstrumentationService.NULL_SERVICE);
   }
 
   Index createIndex() {
     return null;
   }
 
   /**
    * Creates a project `/project`.
    */
@@ skipping 91 matching lines @@
   }
 
   /**
    * Completes with a successful [Response] for the given [request].
    * Otherwise fails.
    */
   Future<Response> waitResponse(Request request) async {
     return serverChannel.sendRequest(request);
   }
 }