nir: Drop infer_non_readable option for nir_opt_access()

Everybody sets it to true now, and the only reason for the option to
exist was to work around a bug that's now been fixed.

Reviewed-by: Emma Anholt <emma@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19162>

src/intel/vulkan_hasvk/anv_pipeline.c

@@ -153,7 +153,6 @@ anv_shader_stage_to_nir(struct anv_device *device,
 
    const nir_opt_access_options opt_access_options = {
       .is_vulkan = true,
-      .infer_non_readable = true,
    };
    NIR_PASS(_, nir, nir_opt_access, &opt_access_options);