Revert of [strong] Object literals create strong objects

Revert of [strong] Object literals create strong objects (patchset #4 id:60001 of https://codereview.chromium.org/1134333005/)

Reason for revert:
[Sheriff] Segmentation fault on arm64 with nosnap:
http://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20sim%20-%20nosnap%20-%20debug%20-%201/builds/1990

Original issue's description:
> [strong] Object literals create strong objects
>
> R=dslomov@chromium.org
> BUG=v8:3956
> LOG=N
>
> Committed: https://crrev.com/fe6598cffb82ec4180dcc2e2310e77d07a803f96
> Cr-Commit-Position: refs/heads/master@{#28444}

TBR=dslomov@chromium.org,arv@chromium.org,rossberg@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:3956
Committed: https://crrev.com/81c080ef8e7c1a38622b870b351bb1e11b6c8a62
Cr-Commit-Position: refs/heads/master@{#28464}

[Michael Achenbach, 2015-05-19 07:35:54]

Created Revert of [strong] Object literals create strong objects

[commit-bot: I haz the power, 2015-05-19 07:35:59]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1135493006/1

[commit-bot: I haz the power, 2015-05-19 07:36:18]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-19 07:36:30]

Patchset 1 (id:??) landed as
https://crrev.com/81c080ef8e7c1a38622b870b351bb1e11b6c8a62
Cr-Commit-Position: refs/heads/master@{#28464}