Revert "Indicate texel buffer support in Vulkan"

This reverts commit 2dd222639dba16fab4e81dbf3e7916fc1eb2cd29.

Reason for revert: Programs test assertion failures

Original change's description:
> Indicate texel buffer support in Vulkan
> 
> Bug: skia:
> Change-Id: I116dd2b15320e3a61afba82b003b13a14ce6122f
> Reviewed-on: https://skia-review.googlesource.com/21402
> Reviewed-by: Greg Daniel <egdaniel@google.com>
> Commit-Queue: Chris Dalton <csmartdalton@google.com>

TBR=egdaniel@google.com,csmartdalton@google.com

Change-Id: I41ee31624636c497125ff38bcb7ce0382d9f386b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/21582
Reviewed-by: Chris Dalton <csmartdalton@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
2 files changed