pkg/unittest: test cleanup

pkg/unittest/test/nested_groups_setup_teardown_test.dart

Index: pkg/unittest/test/nested_groups_setup_teardown_test.dart
diff --git a/pkg/unittest/test/unittest_nested_groups_setup_teardown_test.dart b/pkg/unittest/test/nested_groups_setup_teardown_test.dart
similarity index 97%
rename from pkg/unittest/test/unittest_nested_groups_setup_teardown_test.dart
rename to pkg/unittest/test/nested_groups_setup_teardown_test.dart
index 1cb16a00aa737f623cef174934f1e7ed4d69cd32..fdd851a383702d8c243c79ed49d8cce742da8276 100644
--- a/pkg/unittest/test/unittest_nested_groups_setup_teardown_test.dart
+++ b/pkg/unittest/test/nested_groups_setup_teardown_test.dart
@@ -3,11 +3,13 @@
 // BSD-style license that can be found in the LICENSE file.
 
 library unittestTest;
-import 'dart:isolate';
+
 import 'dart:async';
+import 'dart:isolate';
+
 import 'package:unittest/unittest.dart';
 
-part 'unittest_test_utils.dart';
+part 'utils.dart';
 
 var testName = 'nested groups setup/teardown';