pkg/unittest: test cleanup

pkg/unittest/test/unittest_testcases_immutable_test.dart

Index: pkg/unittest/test/unittest_testcases_immutable_test.dart
diff --git a/pkg/unittest/test/unittest_testcases_immutable_test.dart b/pkg/unittest/test/unittest_testcases_immutable_test.dart
deleted file mode 100644
index 891ea3a995bf84c1f148396ae3468cb2aacda94c..0000000000000000000000000000000000000000
--- a/pkg/unittest/test/unittest_testcases_immutable_test.dart
+++ /dev/null
@@ -1,21 +0,0 @@
-// 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 = 'testcases immutable';
-
-var testFunction = (_) {
-  test(testName, () {
-    expect(() => testCases.clear(), throwsUnsupportedError);
-    expect(() => testCases.removeLast(), throwsUnsupportedError);
-  });
-};
-
-var expected = buildStatusString(1, 0, 0, testName);