Revert of non-aa rects batch (patchset #6 id:90001 of https://codereview.chromium.org/931293002/)

Reason for revert:
breaks angle

Original issue's description:
> non-aa rects batch
>
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/ee72dde696b35534465c14f6b4c5bfca44a2f63e

TBR=robertphillips@google.com,joshualitt@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/944743005