Revert "Fix property enum cache creation to include only own properties"

test/mjsunit/regress/regress-enum-prop-keys-cache-size.js

Index: test/mjsunit/regress/regress-enum-prop-keys-cache-size.js
diff --git a/test/mjsunit/regress/regress-enum-prop-keys-cache-size.js b/test/mjsunit/regress/regress-enum-prop-keys-cache-size.js
deleted file mode 100644
index 1227500eeaf45b7b696ab6b6f3a7e87275569a27..0000000000000000000000000000000000000000
--- a/test/mjsunit/regress/regress-enum-prop-keys-cache-size.js
+++ /dev/null
@@ -1,19 +0,0 @@
-// Copyright 2014 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Flags: --allow-natives-syntax --stress-compaction
-
-%SetAllocationTimeout(100000, 100000);
-
-var x = {};
-x.a = 1;
-x.b = 2;
-x = {};
-
-var y = {};
-y.a = 1;
-
-%SetAllocationTimeout(100000, 0);
-
-for (var z in y) { }