PPC: Remove --pretenure-call-new

PPC: Remove --pretenure-call-new

Port b5588f48fd0b4e3ee43be1fe6c19d7ddd8b8b5f1

Original commit message:
    There isn't a plan to turn it on soon, so we'll take it out in favor of cleaner code.

R=mvstanton@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, dstence@us.ibm.com
BUG=

Committed: https://crrev.com/632c367998d41cb440c94a5f6dd045fb83622cb6
Cr-Commit-Position: refs/heads/master@{#30807}

[MTBrandyberry, 2015-09-17 16:16:46]

The CQ bit was checked by mbrandy@us.ibm.com to run a CQ dry run

[john.yan, 2015-09-17 16:31:35]

lgtm

[MTBrandyberry, 2015-09-17 16:35:45]

The CQ bit was unchecked by mbrandy@us.ibm.com

[MTBrandyberry, 2015-09-17 16:35:47]

The CQ bit was checked by mbrandy@us.ibm.com

[commit-bot: I haz the power, 2015-09-17 16:40:30]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1347253003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1347253003/1

[commit-bot: I haz the power, 2015-09-17 17:04:03]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-17 17:04:22]

Patchset 1 (id:??) landed as
https://crrev.com/632c367998d41cb440c94a5f6dd045fb83622cb6
Cr-Commit-Position: refs/heads/master@{#30807}