test rename overhaul: step 8 - language tests

tests/language/src/Unary2Test.dart

-// Copyright (c) 2012, 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.
-// Dart test for testing binary operations.
-
-class UnaryTest {
-  static foo() { return -4; }
-  static moo() { return +5; }
-  static testMain() {
-    Expect.equals(1, (UnaryTest.foo() + UnaryTest.moo()));
-    var x = +.5;  // Legal number, '+' is not a unary operator.
-  }
-}
-
-main() {
-  UnaryTest.testMain();
-}