Revert "[graphite] Allow GetSkColorTypeFromBufferFormat to be used in Graphite"

This reverts commit cdc40b40cdde070414d75ac289f47c401b7f26b3.

Reason for revert: Android is calling this!!!!!!

Original change's description:
> [graphite] Allow GetSkColorTypeFromBufferFormat to be used in Graphite
>
> Bug: b/237108194
> Change-Id: Ie14c9a9849e4965de1d9258adfe0b746bccb8710
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/787516
> Reviewed-by: Nicolette Prevost <nicolettep@google.com>
> Commit-Queue: Robert Phillips <robertphillips@google.com>
> Reviewed-by: Kevin Lubick <kjlubick@google.com>

Bug: b/237108194
Change-Id: Ib2fc311059e2d4ff6afecf717e73a345a785e1f1
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/788459
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: Robert Phillips <robertphillips@google.com>
13 files changed