Remove now-unused string_iterator symbols

Remove now-unused string_iterator symbols

These were used by the JS implementation, but are now dead code.

R=caitp@igalia.com
BUG=v8:5388
Committed: https://crrev.com/c0550b4cf4ead242b74097d89d0a922cf121d792
Cr-Commit-Position: refs/heads/master@{#40140}

[caitp, 2016-10-10 19:13:52]

https://codereview.chromium.org/2410533002/diff/1/src/heap-symbols.h
File src/heap-symbols.h (left):

https://codereview.chromium.org/2410533002/diff/1/src/heap-symbols.h#oldcode221
src/heap-symbols.h:221: V(string_iterator_next_index_symbol)      \
thanks, lgtm

[adamk, 2016-10-10 19:16:45]

The CQ bit was checked by adamk@chromium.org

[commit-bot: I haz the power, 2016-10-10 19:16:49]

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, 2016-10-10 19:46:26]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-10 19:46:44]

Description was changed from

==========
Remove now-unused string_iterator symbols

These were used by the JS implementation, but are now dead code.

R=caitp@igalia.com
BUG=v8:5388
==========

to

==========
Remove now-unused string_iterator symbols

These were used by the JS implementation, but are now dead code.

R=caitp@igalia.com
BUG=v8:5388

Committed: https://crrev.com/c0550b4cf4ead242b74097d89d0a922cf121d792
Cr-Commit-Position: refs/heads/master@{#40140}
==========

[commit-bot: I haz the power, 2016-10-10 19:46:45]

Patchset 1 (id:??) landed as
https://crrev.com/c0550b4cf4ead242b74097d89d0a922cf121d792
Cr-Commit-Position: refs/heads/master@{#40140}