radv/amdgpu: remove useless assert in radv_amdgpu_winsys_cs_submit_internal()

The zero CS submission path is used instead, and this assertion isn't
really useful.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23669>
1 file changed