[intrinsics] Nuke the %_StringCharFromCode intrinsic.

[intrinsics] Nuke the %_StringCharFromCode intrinsic.

As of https://codereview.chromium.org/2348493003 there are no users of
this intrinsic left in the code, and we don't want to have any new users
of it. The runtime function remains as it serves as a fallback for the
optimized code (Crankshaft code actually).

BUG=v8:5049
R=mstarzinger@chromium.org

Committed: https://crrev.com/3304ea91229f242df6a155dfd3ec2093d1111641
Cr-Commit-Position: refs/heads/master@{#39822}

[Benedikt Meurer, 2016-09-28 10:50:03]

The CQ bit was checked by bmeurer@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-09-28 10:50:10]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[Michael Starzinger, 2016-09-28 10:55:22]

LGTM. Nice.

[commit-bot: I haz the power, 2016-09-28 11:17:11]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-09-28 11:17:12]

Dry run: This issue passed the CQ dry run.

[Benedikt Meurer, 2016-09-28 11:21:27]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2016-09-28 11:21:33]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-09-28 11:24:10]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-28 11:24:31]

Description was changed from

==========
[intrinsics] Nuke the %_StringCharFromCode intrinsic.

As of https://codereview.chromium.org/2348493003 there are no users of
this intrinsic left in the code, and we don't want to have any new users
of it. The runtime function remains as it serves as a fallback for the
optimized code (Crankshaft code actually).

BUG=v8:5049
R=mstarzinger@chromium.org
==========

to

==========
[intrinsics] Nuke the %_StringCharFromCode intrinsic.

As of https://codereview.chromium.org/2348493003 there are no users of
this intrinsic left in the code, and we don't want to have any new users
of it. The runtime function remains as it serves as a fallback for the
optimized code (Crankshaft code actually).

BUG=v8:5049
R=mstarzinger@chromium.org

Committed: https://crrev.com/3304ea91229f242df6a155dfd3ec2093d1111641
Cr-Commit-Position: refs/heads/master@{#39822}
==========

[commit-bot: I haz the power, 2016-09-28 11:24:32]

Patchset 1 (id:??) landed as
https://crrev.com/3304ea91229f242df6a155dfd3ec2093d1111641
Cr-Commit-Position: refs/heads/master@{#39822}