radv: remove wrong assert that checks compute subgroup size

radv: remove wrong assert that checks compute subgroup size

Ooops. For some reasons, I have been confused with Wave32 on GFX10,
but it's still possible to require a specific subgroup size if
only Wave64 is supported.

Fixes: 672d1061998 ("radv/gfx10: fix required subgroup size with VK_EXT_subgroup_size_control")
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4227>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4227>