[intrinsics] Remove unused %_RegExpExec and %_NumberToString.

[intrinsics] Remove unused %_RegExpExec and %_NumberToString.

These intrinsics are no longer required, but their runtime call pendants
are still in use. So remove support for those from all compilers.

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

Review-Url: https://codereview.chromium.org/2694623002
Cr-Commit-Position: refs/heads/master@{#43131}
Committed: https://chromium.googlesource.com/v8/v8/+/32ed62911f6160f5f491bd94edbcd511a5454f1c

[Benedikt Meurer, 2017-02-12 18:39:50]

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

[commit-bot: I haz the power, 2017-02-12 18:39:56]

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

[Yang, 2017-02-12 19:01:07]

lgtm

[Benedikt Meurer, 2017-02-12 19:01:18]

The CQ bit was unchecked by bmeurer@chromium.org

[Benedikt Meurer, 2017-02-12 19:01:22]

The CQ bit was checked by bmeurer@chromium.org

[commit-bot: I haz the power, 2017-02-12 19:01:26]

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, 2017-02-12 19:04:40]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1486926082222550, "parent_rev":
"a8758ddb5c52eed092639413c492d6b26700a405", "commit_rev":
"32ed62911f6160f5f491bd94edbcd511a5454f1c"}

[commit-bot: I haz the power, 2017-02-12 19:04:44]

Description was changed from

==========
[intrinsics] Remove unused %_RegExpExec and %_NumberToString.

These intrinsics are no longer required, but their runtime call pendants
are still in use. So remove support for those from all compilers.

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

to

==========
[intrinsics] Remove unused %_RegExpExec and %_NumberToString.

These intrinsics are no longer required, but their runtime call pendants
are still in use. So remove support for those from all compilers.

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

Review-Url: https://codereview.chromium.org/2694623002
Cr-Commit-Position: refs/heads/master@{#43131}
Committed:
https://chromium.googlesource.com/v8/v8/+/32ed62911f6160f5f491bd94edbcd511a54...
==========

[commit-bot: I haz the power, 2017-02-12 19:04:45]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/32ed62911f6160f5f491bd94edbcd511a54...