This reverts commit 8ace36f8.

Original change's description:
> Revert "Add a Vulkan feature to compress float32 vertex formats."
>
> Bug: b/167404532
> Bug: b/161716126
> Change-Id: I95157a006d5c1fd2d3c0c2c2be37fa0403c07f93
> Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2510011
> Reviewed-by: Tim Van Patten <timvp@google.com>
> Reviewed-by: Jamie Madill <jmadill@chromium.org>
> Commit-Queue: Geoff Lang <geofflang@chromium.org>

Bug: b/167404532
Bug: b/161716126
Change-Id: Ic6811fe3a7124e6eb1efe7c72a1a03a120217753
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2815260
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Tim Van Patten <timvp@google.com>
Reviewed-by: Charlie Lao <cclao@google.com>