Use the new test runner.

test/global/activate/missing_git_repo_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 'package:scheduled_test/scheduled_test.dart';
 
 import '../../test_pub.dart';
 
 main() {
-  initConfig();
   integration('fails if the Git repo does not exist', () {
     ensureGit();
 
     schedulePub(args: ["global", "activate", "-sgit", "../nope.git"],
         error: contains("repository '../nope.git' does not exist"),
         exitCode: 1);
   });
 }