test rename overhaul: step 8 - language tests

tests/language/src/CompileTimeConstant8Test.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.
-
-class A<T> {
-  const A();
-  toString() => "a";
-}
-
-final a = const A<int>();
-final b = const A<double>();
-
-final list1 = const<int> [1, 2];
-final list2 = const [1, 2];
-main() {
-  Expect.isFalse(a === b);
-  Expect.isFalse(list1 === list2);
-}