Remove the old task model

pkg/analysis_server/benchmark/integration/driver.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 server.driver;
 
 import 'dart:async';
 import 'dart:math' show max, sqrt;
 
 import 'package:logging/logging.dart';
@@ skipping 27 matching lines @@
  */
 class Driver extends IntegrationTestMixin {
   /**
    * The amount of time to give the server to respond to a shutdown request
    * before forcibly terminating it.
    */
   static const Duration SHUTDOWN_TIMEOUT = const Duration(seconds: 5);
 
   final Logger logger = new Logger('Driver');
 
-  final bool newTaskModel;
-
   /**
    * The diagnostic port for Analysis Server or `null` if none.
    */
   final int diagnosticPort;
 
   /**
    * A flag indicating whether the server is running.
    */
   bool running = false;
 
   @override
   Server server;
 
   /**
    * The results collected while running analysis server.
    */
   final Results results = new Results();
 
   /**
    * The [Completer] for [runComplete].
    */
   Completer<Results> _runCompleter = new Completer<Results>();
 
-  Driver({this.newTaskModel, this.diagnosticPort});
+  Driver({this.diagnosticPort});
 
   /**
    * Return a [Future] that completes with the [Results] of running
    * the analysis server once all operations have been performed.
    */
   Future<Results> get runComplete => _runCompleter.future;
 
   /**
    * Perform the given operation.
    * Return a [Future] that completes when the next operation can be performed,
@@ skipping 23 matching lines @@
     logger.log(Level.FINE, 'starting server');
     initializeInttestMixin();
     server = new Server();
     Completer serverConnected = new Completer();
     onServerConnected.listen((_) {
       logger.log(Level.FINE, 'connected to server');
       serverConnected.complete();
     });
     running = true;
     return server
-        .start(
-            diagnosticPort: diagnosticPort,
-            newTaskModel: newTaskModel /*profileServer: true*/)
+        .start(diagnosticPort: diagnosticPort /*profileServer: true*/)
         .then((params) {
       server.listenToOutput(dispatchNotification);
       server.exitCode.then((_) {
         logger.log(Level.FINE, 'server stopped');
         running = false;
         _resultsReady();
       });
       return serverConnected.future;
     });
   }
@@ skipping 181 matching lines @@
       int totalUnexpectedResultCount) {
     StringBuffer sb = new StringBuffer();
     _printColumn(sb, 'Totals', keyLen);
     _printColumn(sb, totalCount.toString(), 6, rightJustified: true);
     _printColumn(sb, totalErrorCount.toString(), 6, rightJustified: true);
     _printColumn(sb, totalUnexpectedResultCount.toString(), 6,
         rightJustified: true);
     print(sb.toString());
   }
 }