Remove the old task model

pkg/analysis_server/test/integration/integration_tests.dart

Index: pkg/analysis_server/test/integration/integration_tests.dart
diff --git a/pkg/analysis_server/test/integration/integration_tests.dart b/pkg/analysis_server/test/integration/integration_tests.dart
index 5004f869658be8512d2d1961f650546ce7dc728b..f4dcfeb0a63f1ff65389c6613e1f1b90c709ccf9 100644
--- a/pkg/analysis_server/test/integration/integration_tests.dart
+++ b/pkg/analysis_server/test/integration/integration_tests.dart
@@ -11,7 +11,6 @@ import 'dart:io';
 
 import 'package:analysis_server/plugin/protocol/protocol.dart';
 import 'package:analysis_server/src/constants.dart';
-import 'package:analysis_server/src/server/driver.dart' as analysisServer;
 import 'package:path/path.dart';
 import 'package:unittest/unittest.dart';
 
@@ -597,7 +596,6 @@ class Server {
       {bool debugServer: false,
       int diagnosticPort,
       bool profileServer: false,
-      bool newTaskModel: true,
       bool useAnalysisHighlight2: false}) {
     if (_process != null) {
       throw new Exception('Process already started');
@@ -627,9 +625,6 @@ class Server {
     if (useAnalysisHighlight2) {
       arguments.add('--useAnalysisHighlight2');
     }
-    if (!newTaskModel) {
-      arguments.add('--${analysisServer.Driver.DISABLE_NEW_TASK_MODEL}');
-    }
 //    print('Launching $serverPath');
 //    print('$dartBinary ${arguments.join(' ')}');
     return Process.start(dartBinary, arguments).then((Process process) {