[harmony] Move some regression tests to the right place

test/mjsunit/regress/regress-crbug-451770.js

Index: test/mjsunit/regress/regress-crbug-451770.js
diff --git a/test/mjsunit/regress/regress-crbug-451770.js b/test/mjsunit/regress/regress-crbug-451770.js
deleted file mode 100644
index 942814a3169c7b04faefed3a2170df72d3411860..0000000000000000000000000000000000000000
--- a/test/mjsunit/regress/regress-crbug-451770.js
+++ /dev/null
@@ -1,15 +0,0 @@
-// Copyright 2015 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: --harmony-computed-property-names --harmony-classes --harmony-sloppy
-
-assertThrows(function f() {
-  var t = { toString: function() { throw new Error(); } };
-  var o = { [t]: 23 };
-}, Error);
-
-assertThrows(function f() {
-  var t = { toString: function() { throw new Error(); } };
-  class C { [t]() { return 23; } };
-}, Error);