Revert "Wat if you closure identical?"

tests/language/identical_closure_test.dart

Index: tests/language/identical_closure_test.dart
diff --git a/tests/language/identical_closure_test.dart b/tests/language/identical_closure_test.dart
deleted file mode 100644
index 6fbe56ac15dbd92343f5735782a13167df917911..0000000000000000000000000000000000000000
--- a/tests/language/identical_closure_test.dart
+++ /dev/null
@@ -1,10 +0,0 @@
-// 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.
-
-// We assign the closure to a global to avoid potential optimizations.
-var myIdentical = identical;
-
-main() {
-  Expect.isTrue(myIdentical(42, 42));
-}