Revert "Share code handling legacy SkFilterQuality"

This reverts commit 9a8cbe52e18aff6d7cc54ca0eacb75402e6ef6eb.

Reason for revert: forgot to retain the ganesh-diff of performing trilerp for kMedium

Original change's description:
> Share code handling legacy SkFilterQuality
>
> Change-Id: Idfd3b96896d7fa2cdcf9127b4d30e2fc29bcab79
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/337436
> Reviewed-by: Brian Salomon <bsalomon@google.com>
> Commit-Queue: Mike Reed <reed@google.com>

TBR=bsalomon@google.com,robertphillips@google.com,reed@google.com

Change-Id: I1e126be4c81fa3cfd21ead6734a530eb9509c3d7
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/337639
Reviewed-by: Mike Reed <reed@google.com>
1 file changed