Revert "android: import libsync from Android goog/nyc-mr1-arc branch"

This reverts commit 7861568a44ec5d2360f8cc4330d202508520bda1.

Reason for revert: <INSERT REASONING HERE>

Original change's description:
> android: import libsync from Android goog/nyc-mr1-arc branch
> 
> BUG=b:36919374
> TEST=emerge-<board> arc-camera3-libsync
> 
> Change-Id: Iaaef7d1e6732195449a5a78e37d60a661a5ee464
> Reviewed-on: https://chromium-review.googlesource.com/475311
> Reviewed-by: Ricky Liang <jcliang@chromium.org>
> Tested-by: Ricky Liang <jcliang@chromium.org>
> Commit-Queue: Ricky Liang <jcliang@chromium.org>
> 

TBR=jcliang@chromium.org,wuchengli@chromium.org,henryhsu@chromium.org,hywu@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=b:36919374

Change-Id: I1b3787168e10c60ee4a0a904fff2166f4d338b23
Reviewed-on: https://chromium-review.googlesource.com/484560
Reviewed-by: Ricky Liang <jcliang@chromium.org>
Commit-Queue: Ricky Liang <jcliang@chromium.org>
Tested-by: Ricky Liang <jcliang@chromium.org>
Trybot-Ready: Ricky Liang <jcliang@chromium.org>
8 files changed