Revert of Add terrible workaround to fix stencil clear crash on S3. (patchset #1 id:1 of https://codereview.chromium.org/1001693003/)

Reason for revert:
Needs to be reverted in order to cleanly revert
https://codereview.chromium.org/949263002

That one needs to be reverted to fix black boxes with GPU
raster, and GPU bot failures.

BUG=466690

Original issue's description:
> Add terrible workaround to fix stencil clear crash on S3.
>
> BUG=skia:3525
>
> Committed: https://skia.googlesource.com/skia/+/084340bb9bbb538baf02a11ac36e29f0d9cdc493

TBR=joshualitt@google.com,bsalomon@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:3525

Review URL: https://codereview.chromium.org/1005263002