[heap] Remove test running OOM on some bots

While the test was useful to reproduce the issue locally it creates a lot of
heap pressure and causes all sorts of troubles (OOM, slowness) on the bots, so
let's drop it.

R=hpayer@chromium.org

Review-Url: https://codereview.chromium.org/2127803002
Cr-Commit-Position: refs/heads/master@{#37551}

test/mjsunit/mjsunit.status

@@ -391,9 +391,6 @@
   # Issue 3723.
   'regress/regress-3717': [SKIP],
 
-  # BUG(chromium:625752): Too slow.
-  'regress/regress-625752': [SKIP],
-
   # BUG(v8:4237)
   'regress/regress-3976': [SKIP],
 

test/mjsunit/regress/regress-625752.js

-// Copyright 2016 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.
-
-v3 = Math.floor(0xFFFFFFFF / 4) + 1;
-Object.prototype.__defineGetter__(1, function() {
-this[1] = Array(0x8000).join();
-})
-try { v38 = new ArrayBuffer(v3); } catch (e) {}
-try { v41 = new Intl.DateTimeFormat(); } catch (e) {}