Revert "Expand partial render target write pixels workaround."

This reverts commit 0cc507d22566bb7e28e5fe21e4b3fc7b682d86a2.

Reason for revert: Causing IntTextureText to fail on bots

Original change's description:
> Expand partial render target write pixels workaround.
> 
> The workaround is extended in the following ways:
> 
> 1) It now applies to any texture whose base level has *ever* been attached to a FBO.
> 2) It applies to Adreno 5xx in addition to Adreno 4xx
> 3) It applies in the atlas upload code path.
> 
> This workaround (and a similar one) are narrowed to GLCaps rather than Caps.
> 
> Bug: skia:
> Change-Id: Id600e9739bb97bf6766075ea2a987fd2039e53e5
> Reviewed-on: https://skia-review.googlesource.com/18150
> Reviewed-by: Robert Phillips <robertphillips@google.com>
> Commit-Queue: Brian Salomon <bsalomon@google.com>
> 

TBR=bsalomon@google.com,robertphillips@google.com
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:

Change-Id: I53c8dd7ea7f614da57331470fcc24c6d84aba354
Reviewed-on: https://skia-review.googlesource.com/18229
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
9 files changed