This reverts commit a51b57fa.

Original change's description:
> Revert "Vulkan: Add features to modify sampling parameters"
>
> Bug: b/167404532
> Change-Id: Iae19dfe165074e8c01216312bddd744c4fb504a4
> Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2510012
> Commit-Queue: Geoff Lang <geofflang@chromium.org>
> Reviewed-by: Tim Van Patten <timvp@google.com>
> Reviewed-by: Jamie Madill <jmadill@chromium.org>

Bug: b/167404532
Change-Id: I2c756b8eb0f61701ef6e33275e557bc199a4d3b4
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2815259Reviewed-by: Tim Van Patten <timvp@google.com>
Reviewed-by: Charlie Lao <cclao@google.com>
Commit-Queue: Geoff Lang <geofflang@chromium.org>