Revert of Adding linear interpolation to rgb->yuv conversion (patchset #1 id:1 of https://codereview.chromium.org/973563002/)

Reason for revert:
Speculative revert to see if this unblocks the deps roll

Original issue's description:
> Adding linear interpolation to rgb->yuv conversion
>
> When the UV planes are smaller than the Y plane, doing the upscaling in nearest mode was creating artefacts, so I changed it to use linear interpolation to fix the issue.
>
> BUG=460380
>
> Committed: https://skia.googlesource.com/skia/+/cd9d42c5167a50f1bf20e969343556d61354171b

TBR=bsalomon@google.com,scroggo@google.com,reed@google.com,sugoi@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=460380

Review URL: https://codereview.chromium.org/977133002
1 file changed