Revert "Reland "Release YUVA planes in SkImage_GpuYUVA after flattenning to RGBA.""

This reverts commit 622b6f5367e2d26dab276df8bd9df0451236808b.

Reason for revert: ANGLE may not be fixed

Original change's description:
> Reland "Release YUVA planes in SkImage_GpuYUVA after flattenning to RGBA."
> 
> This reverts commit bc0c460349142140295593a3a32d507f7b45c622.
> 
> Reason for revert: fixed isTextureBacked(), checked cc_unittests passes
> 
> Original change's description:
> > Revert "Release YUVA planes in SkImage_GpuYUVA after flattenning to RGBA."
> >
> > This reverts commit a15f355be83136e7827ccfbc9bb9e9ea77f48518.
> >
> > Reason for revert: ANGLE failing new test
> >
> > Original change's description:
> > > Release YUVA planes in SkImage_GpuYUVA after flattenning to RGBA.
> > >
> > > Also removed unused virtual function from SkImage_GpuBase and override
> > > on SkImage_GpuYUVA.
> > >
> > > Change-Id: Ib47b46b529b16976181cb9453976133d66e0f952
> > > Reviewed-on: https://skia-review.googlesource.com/c/skia/+/212734
> > > Commit-Queue: Brian Salomon <bsalomon@google.com>
> > > Reviewed-by: Robert Phillips <robertphillips@google.com>
> >
> > TBR=jvanverth@google.com,bsalomon@google.com,robertphillips@google.com
> >
> > Change-Id: Ib2566ff8aa99d3698d6044167e70a1d75542f2e9
> > No-Presubmit: true
> > No-Tree-Checks: true
> > No-Try: true
> > Reviewed-on: https://skia-review.googlesource.com/c/skia/+/212986
> > Reviewed-by: Robert Phillips <robertphillips@google.com>
> > Commit-Queue: Robert Phillips <robertphillips@google.com>
> 
> TBR=jvanverth@google.com,bsalomon@google.com,robertphillips@google.com
> 
> Change-Id: I3c9454da33a764504e768d02b59a5cd99766aff1
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/212988
> Commit-Queue: Brian Salomon <bsalomon@google.com>
> Reviewed-by: Brian Salomon <bsalomon@google.com>

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

Change-Id: I06632adc69844522c87cd72e8a6b0c2795974fe4
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/212989
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
5 files changed