Revert of added support for PLS path rendering (patchset #16 id:360001 of https:...

Revert of added support for PLS path rendering (patchset #16 id:360001 of https://codereview.chromium.org/1541903002/ )

Reason for revert:
ASAN failure at src/gpu/GrXferProcessor.cpp:224

Original issue's description:
> added support for PLS path rendering
>
> BUG=skia:3555
> GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1541903002
>
> Committed: https://skia.googlesource.com/skia/+/7df3f5e127f8016d17b637cc48a6a4718f1a6822

TBR=bsalomon@google.com,egdaniel@google.com,joshualitt@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:3555
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1626553002

Review URL: https://codereview.chromium.org/1626553002