radv: Rely on workgroup_size initialization

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24158>

src/amd/vulkan/meta/radv_meta.c

@@ -604,9 +604,6 @@ nir_builder PRINTFLIKE(3, 4)
    }
 
    b.shader->options = &dev->physical_device->nir_options[stage];
-   b.shader->info.workgroup_size[0] = 1;
-   b.shader->info.workgroup_size[1] = 1;
-   b.shader->info.workgroup_size[2] = 1;
 
    return b;
 }