Revert of further skiaserve image performance improvements (patchset #1 id:1 of https://codereview.chromium.org/1707453003/ )

Reason for revert:
Broke skiaserve GPU rendering

Original issue's description:
> further skiaserve image performance improvements
> GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1707453003
>
> Committed: https://skia.googlesource.com/skia/+/68c063bf11c91b2b3b15cb93168cf2af9b2c642d

TBR=joshualitt@google.com,jcgregorio@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1708683002
2 files changed