Use the new test runner.

test/validator/utf8_readme_test.dart

 // Copyright (c) 2013, 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:pub/src/entrypoint.dart';
 import 'package:pub/src/validator.dart';
 import 'package:pub/src/validator/utf8_readme.dart';
 import 'package:scheduled_test/scheduled_test.dart';
 
 import '../descriptor.dart' as d;
 import '../test_pub.dart';
 import 'utils.dart';
 
 Validator utf8Readme(Entrypoint entrypoint) =>
   new Utf8ReadmeValidator(entrypoint);
 
 main() {
-  initConfig();
-
   group('should consider a package valid if it', () {
     setUp(d.validPackage.create);
 
     integration('looks normal', () => expectNoValidationError(utf8Readme));
 
     integration('has a non-primary readme with invalid utf-8', () {
       d.dir(appPath, [
         d.file("README", "Valid utf-8"),
         d.binaryFile("README.invalid", [192])
       ]).create();
       expectNoValidationError(utf8Readme);
     });
   });
 
   integration('should consider a package invalid if it has a README with '
       'invalid utf-8', () {
     d.validPackage.create();
 
     d.dir(appPath, [
       d.binaryFile("README", [192])
     ]).create();
     expectValidationWarning(utf8Readme);
   });
 }