Reverse the sense of the flag to make it easier to find test that need to be converted

pkg/analysis_server/test/search/member_references_test.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.
 
 import 'dart:async';
 
 import 'package:analysis_server/protocol/protocol.dart';
 import 'package:analysis_server/protocol/protocol_generated.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
@@ skipping 14 matching lines @@
   }
 
   Future findMemberReferences(String name) async {
     await waitForTasksFinished();
     Request request = new SearchFindMemberReferencesParams(name).toRequest('0');
     Response response = await waitResponse(request);
     searchId = new SearchFindMemberReferencesResult.fromResponse(response).id;
     return waitForSearchResults();
   }
 
-  @override
-  void setUp() {
-    enableNewAnalysisDriver = true;
-    super.setUp();
-  }
-
   test_fields_explicit() async {
     addTestFile('''
 class A {
   var foo;
 }
 class B {
   var foo;
 }
 mainResolved(A a, B b) {
   a.foo = 1;
@@ skipping 60 matching lines @@
   b.foo(20);
 }
 ''');
     await findMemberReferences('foo');
     assertNoResult(SearchResultKind.INVOCATION, 'foo(1)');
     assertNoResult(SearchResultKind.INVOCATION, 'foo(2)');
     assertHasRef(SearchResultKind.INVOCATION, 'foo(10)', true);
     assertHasRef(SearchResultKind.INVOCATION, 'foo(20)', true);
   }
 }