Revert "HEIF decode: add support for 10-bit color format"

This reverts commit 2710bcfc68d3bc42205754922350bc469b80a5c8.

Reason for revert: This CL is preventing the roll into Android because it is causing CTS failures. 

Original change's description:
> HEIF decode: add support for 10-bit color format
>
> Bug: b/201083499
> Test: TBD
> Change-Id: I76d3244782c139006dff68ea713eb24c10bb962d
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/501159
> Reviewed-by: Leon Scroggins <scroggo@google.com>
> Reviewed-by: Brian Osman <brianosman@google.com>
> Commit-Queue: Leon Scroggins <scroggo@google.com>

Bug: b/201083499
Change-Id: I4ea9fb74a9792bcc1687024d852ffc3525093727
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/501676
Auto-Submit: Derek Sollenberger <djsollen@google.com>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
5 files changed