virtgpu_virgl: remove unused parameter

Format is no longer used when computing virgl bind flags, so drop the
parameter.

BUG=None
TEST=compiles

Change-Id: I7c0526584c442f981aa1b109c6b785a01d1e7ddf
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/minigbm/+/4014226
Reviewed-by: Yiwei Zhang <zzyiwei@chromium.org>
Commit-Queue: David Stevens <stevensd@chromium.org>
Tested-by: David Stevens <stevensd@chromium.org>
1 file changed