[regexp] Remove unused code

[regexp] Remove unused code

This CL removes code that is now unused since the port of regexp.js has been
completed. Removed functions / classes are:

* regexp.js (GetSubstitution moved to string.js)
* RegExpConstructResult stub
* RegExpFlags intrinsic
* RegExpSource intrinsic
* RegExpInitializeAndCompile runtime function

BUG=v8:5339
Committed: https://crrev.com/77ddcfb3e095d025e7a5126d398b0493e722dbb9
Cr-Commit-Position: refs/heads/master@{#40547}

[jgruber, 2016-10-24 13:33:30]

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

[commit-bot: I haz the power, 2016-10-24 13:33:40]

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

[jgruber, 2016-10-24 13:34:15]

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

[commit-bot: I haz the power, 2016-10-24 14:10:28]

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

[commit-bot: I haz the power, 2016-10-24 14:10:29]

Dry run: This issue passed the CQ dry run.

[Yang, 2016-10-25 07:03:16]

On 2016/10/24 13:34:16, jgruber wrote:

LGTM

[jgruber, 2016-10-25 07:05:14]

The CQ bit was checked by jgruber@chromium.org

[commit-bot: I haz the power, 2016-10-25 07:05:26]

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, 2016-10-25 07:08:36]

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

[commit-bot: I haz the power, 2016-10-25 07:08:37]

Try jobs failed on following builders:
  v8_presubmit on master.tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_presubmit/builds/27210)

[jgruber, 2016-10-25 07:11:15]

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

[jgruber, 2016-10-25 07:11:15]

+bmeurer for compiler/, crankshaft/ and interpreter/.

[Benedikt Meurer, 2016-10-25 07:12:25]

Awesome, LGTM.

[jgruber, 2016-10-25 07:16:21]

The CQ bit was checked by jgruber@chromium.org

[commit-bot: I haz the power, 2016-10-25 07:16:26]

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, 2016-10-25 07:18:34]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-11-17 22:11:51]

Description was changed from

==========
[regexp] Remove unused code

This CL removes code that is now unused since the port of regexp.js has been
completed. Removed functions / classes are:

* regexp.js (GetSubstitution moved to string.js)
* RegExpConstructResult stub
* RegExpFlags intrinsic
* RegExpSource intrinsic
* RegExpInitializeAndCompile runtime function

BUG=v8:5339
==========

to

==========
[regexp] Remove unused code

This CL removes code that is now unused since the port of regexp.js has been
completed. Removed functions / classes are:

* regexp.js (GetSubstitution moved to string.js)
* RegExpConstructResult stub
* RegExpFlags intrinsic
* RegExpSource intrinsic
* RegExpInitializeAndCompile runtime function

BUG=v8:5339

Committed: https://crrev.com/77ddcfb3e095d025e7a5126d398b0493e722dbb9
Cr-Commit-Position: refs/heads/master@{#40547}
==========

[commit-bot: I haz the power, 2016-11-17 22:11:53]

Patchset 1 (id:??) landed as
https://crrev.com/77ddcfb3e095d025e7a5126d398b0493e722dbb9
Cr-Commit-Position: refs/heads/master@{#40547}