[turbofan] Remove unused code

[turbofan] Remove unused code

With the new iteration strategy, sucessors of EffectPhis
are only visited once the effect phi has been processed.

BUG=v8:4586
LOG=n

Committed: https://crrev.com/e1084094bb14ba93cbcc54418b0cb80e1153b0ad
Cr-Commit-Position: refs/heads/master@{#33586}

[sigurds, 2016-01-28 14:29:47]

Removed a few lines of now unused code.

[sigurds, 2016-01-28 14:29:57]

sigurds@chromium.org changed reviewers:
+ mstarzinger@chromium.org

[Michael Starzinger, 2016-01-28 14:33:19]

LGTM.

[sigurds, 2016-01-28 14:54:47]

The CQ bit was checked by sigurds@chromium.org

[commit-bot: I haz the power, 2016-01-28 14:54:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1641923003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1641923003/1

[commit-bot: I haz the power, 2016-01-28 14:59:40]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-01-28 14:59:48]

Description was changed from

==========
[turbofan] Remove unused code

With the new iteration strategy, sucessors of EffectPhis
are only visited once the effect phi has been processed.

BUG=v8:4586
LOG=n
==========

to

==========
[turbofan] Remove unused code

With the new iteration strategy, sucessors of EffectPhis
are only visited once the effect phi has been processed.

BUG=v8:4586
LOG=n

Committed: https://crrev.com/e1084094bb14ba93cbcc54418b0cb80e1153b0ad
Cr-Commit-Position: refs/heads/master@{#33586}
==========

[commit-bot: I haz the power, 2016-01-28 14:59:49]

Patchset 1 (id:??) landed as
https://crrev.com/e1084094bb14ba93cbcc54418b0cb80e1153b0ad
Cr-Commit-Position: refs/heads/master@{#33586}