Revert "Merge more Kernel infrastructure from kernel_sdk SDK fork."

tests/kernel/unsorted/this_test.dart

Index: tests/kernel/unsorted/this_test.dart
diff --git a/tests/kernel/unsorted/this_test.dart b/tests/kernel/unsorted/this_test.dart
deleted file mode 100644
index 06a0ce61f172555ebfa49182e217e029e0c47ee3..0000000000000000000000000000000000000000
--- a/tests/kernel/unsorted/this_test.dart
+++ /dev/null
@@ -1,15 +0,0 @@
-// Copyright (c) 2016, 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 'expect.dart';
-
-class A {
-  getThis() => this;
-}
-
-main() {
-  var a = new A();
-  Expect.isTrue(a == a.getThis());
-  Expect.isTrue(identical(a, a.getThis()));
-}