[runtime] Remove the obsolete %_StringCharAt intrinsic.

[runtime] Remove the obsolete %_StringCharAt intrinsic.

This intrinsic (and the matching runtime entry) are no longer used by
now and can thereby be removed.

BUG=v8:5049
Committed: https://crrev.com/b2fd2ded16e9f648af468a7e9c70ff47b38d197f
Cr-Commit-Position: refs/heads/master@{#36540}

[Benedikt Meurer, 2016-05-27 06:29:02]

bmeurer@chromium.org changed reviewers:
+ jgruber@chromium.org

[Benedikt Meurer, 2016-05-27 06:29:03]

Hey Jakob,

Red-only, removing dead code.
Please take a look.

Thanks,
Benedikt

[jgruber, 2016-05-27 08:07:05]

lgtm

[Benedikt Meurer, 2016-05-27 08:48:36]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2016-05-27 08:48:40]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2016993003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/2016993003/1

[commit-bot: I haz the power, 2016-05-27 08:50:50]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-27 08:52:39]

Description was changed from

==========
[runtime] Remove the obsolete %_StringCharAt intrinsic.

This intrinsic (and the matching runtime entry) are no longer used by
now and can thereby be removed.

BUG=v8:5049
==========

to

==========
[runtime] Remove the obsolete %_StringCharAt intrinsic.

This intrinsic (and the matching runtime entry) are no longer used by
now and can thereby be removed.

BUG=v8:5049

Committed: https://crrev.com/b2fd2ded16e9f648af468a7e9c70ff47b38d197f
Cr-Commit-Position: refs/heads/master@{#36540}
==========

[commit-bot: I haz the power, 2016-05-27 08:52:40]

Patchset 1 (id:??) landed as
https://crrev.com/b2fd2ded16e9f648af468a7e9c70ff47b38d197f
Cr-Commit-Position: refs/heads/master@{#36540}