pkg/unittest: test cleanup

pkg/unittest/test/unittest_late_exception_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.
-
-library unittestTest;
-import 'dart:isolate';
-import 'dart:async';
-import 'package:unittest/unittest.dart';
-
-part 'unittest_test_utils.dart';
-
-var testName = 'late exception test';
-
-var testFunction = (_) {
-  var f;
-  test('testOne', () {
-    f = expectAsync(() {});
-    _defer(f);
-  });
-  test('testTwo', () {
-    _defer(expectAsync(() { f(); }));
-  });
-};
-
-var expected = buildStatusString(1, 0, 1, 'testOne',
-    message: 'Callback called (2) after test case testOne has already '
-        'been marked as pass.:testTwo:');