Revert of Enable timerfd in libusb.

Revert of Enable timerfd in libusb. (patchset #3 id:40001 of https://codereview.chromium.org/1368773005/ )

Reason for revert:
Speculatively reverting change that might cause failures:
https://build.chromium.org/p/chromium.chrome/builders/Google%20Chrome%20Linux%20x64/builds/4391
https://build.chromium.org/p/chromium.chrome/builders/Google%20Chrome%20Linux/builds/42667

Original issue's description:
> Enable timerfd in libusb.
>
> This compile flag enables correct timeout handling in libusb.
> Without it, timeouts of e.g. interrupt transfers are ignored in most cases.
>
> BUG=535950
>
> Committed: https://crrev.com/072a708b34caad4e046623c2a1c237dc751b92b9
> Cr-Commit-Position: refs/heads/master@{#351072}

TBR=reillyg@chromium.org,pneubeck@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=535950
Committed: https://crrev.com/c35967d12137a49d9ec0cbab0571ea4c03c5ac57
Cr-Commit-Position: refs/heads/master@{#351090}

[pavely, 2015-09-28 18:16:53]

Created Revert of Enable timerfd in libusb.

[commit-bot: I haz the power, 2015-09-28 18:20:46]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1369373002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1369373002/1

[commit-bot: I haz the power, 2015-09-28 18:24:29]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-28 18:25:25]

Patchset 1 (id:??) landed as
https://crrev.com/c35967d12137a49d9ec0cbab0571ea4c03c5ac57
Cr-Commit-Position: refs/heads/master@{#351090}