Migrate block 163 to Dart 2.0.

tests/language/unary_test.dart

Index: tests/language/unary_test.dart
diff --git a/tests/language/unary_test.dart b/tests/language/unary_test.dart
deleted file mode 100644
index d2421c044f31677e27dd2deaac6280f9045f6d5c..0000000000000000000000000000000000000000
--- a/tests/language/unary_test.dart
+++ /dev/null
@@ -1,25 +0,0 @@
-// Copyright (c) 2011, 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:expect/expect.dart";
-
-// Dart test for testing binary operations.
-
-class UnaryTest {
-  static foo() {
-    return 4;
-  }
-
-  static moo() {
-    return 5;
-  }
-
-  static testMain() {
-    Expect.equals(9.0, (UnaryTest.foo() + UnaryTest.moo()));
-  }
-}
-
-main() {
-  UnaryTest.testMain();
-}