Revert of Add temporary blacklist debugging. (patchset #1 id:1 of https://codereview.chromium.org/805643004/)

Reason for revert:
fixed!

Original issue's description:
> Add temporary blacklist debugging.
>
> Not sure why blacklists don't seem to work on bots.  They look right.
>
> NOTREECHECKS=true
>
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/f77156e1925cd5d5504070fe5533a4c456732c1b

TBR=mtklein@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/851903003