Revert of Add BigRectGM. (patchset #2 id:20001 of https://codereview.chromium.org...

Revert of Add BigRectGM. (patchset #2 id:20001 of https://codereview.chromium.org/1758113005/ )

Reason for revert:
Causing ASAN failures. (I had expected float-cast ASAN failures, which are disabled right now, but we're also seeing integer overflows.)

Original issue's description:
> Add BigRectGM.
>
> BUG=skia:5060
> GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1758113005
>
> Committed: https://skia.googlesource.com/skia/+/a9101eef5ffc5f329a5edc75fd67441d868b0e9b

TBR=mtklein@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:5060

Review URL: https://codereview.chromium.org/1773593005