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

tests/kernel/unsorted/instance_getters_and_setters_test.dart

-// 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 {
-  var field;
-
-  get getField {
-    return field;
-  }
-
-  set setField(value) {
-    field = value;
-    return null;
-  }
-}
-
-main() {
-  var result;
-  var a = new A();
-
-  Expect.isTrue(a.field == null);
-  Expect.isTrue(a.getField == null);
-
-  result = (a.field = 42);
-  Expect.isTrue(result == 42);
-  Expect.isTrue(a.field == 42);
-  Expect.isTrue(a.getField == 42);
-
-  result = (a.setField = 99);
-  Expect.isTrue(result == 99);
-  Expect.isTrue(a.field == 99);
-  Expect.isTrue(a.getField == 99);
-}