spirv: Drop lower_workgroup_access_to_offsets
Now that !622 (closed) landed we can get rid of this extra option in spirv_to_nir.
The first patch stops using it for glspirv (and i965).
Now that !622 (closed) landed we can get rid of this extra option in spirv_to_nir.
The first patch stops using it for glspirv (and i965).