Revert "Add SkImage::MakeRasterFromCompressed and make MakeFromCompressed fall back to decompression for unsupported compression types"

This reverts commit 3234ce1347c5c258068a58a1f36a56934f752a52.

Reason for revert: missing etc1.h

Original change's description:
> Add SkImage::MakeRasterFromCompressed and make MakeFromCompressed fall back to decompression for unsupported compression types
> 
> This is intended to make using compressed textures easier since developers can just provided compressed data and it will be uploaded to the GPU in some way, shape or form.
> 
> Change-Id: Ieed008f083d6e3594eaa9a02bc5348e00ee60d2a
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/265601
> Reviewed-by: Mike Reed <reed@google.com>
> Reviewed-by: Brian Salomon <bsalomon@google.com>
> Reviewed-by: Greg Daniel <egdaniel@google.com>
> Commit-Queue: Robert Phillips <robertphillips@google.com>

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

Change-Id: Ia497e6767c43ab6f8bfeb28e70244107a1442cf2
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/266937
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
21 files changed