Remove a regression test that depended on utils.ImportNow()

test/mjsunit/regress/regress-3281.js

Index: test/mjsunit/regress/regress-3281.js
diff --git a/test/mjsunit/regress/regress-3281.js b/test/mjsunit/regress/regress-3281.js
deleted file mode 100644
index f7b167e3b887f0fff44756949817668b38349d00..0000000000000000000000000000000000000000
--- a/test/mjsunit/regress/regress-3281.js
+++ /dev/null
@@ -1,14 +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: --expose-natives-as=builtins
-// Should not crash or raise an exception.
-
-var SetIterator = builtins.ImportNow("SetIterator");
-var s = new Set();
-var setIterator = new SetIterator(s, 2);
-
-var MapIterator = builtins.ImportNow("MapIterator");
-var m = new Map();
-var mapIterator = new MapIterator(m, 2);