nir: Remove nir_shader->shared_size.

The same info is in shader_info. Dedupe.

Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10094>

src/compiler/nir/nir_clone.c

@@ -773,7 +773,6 @@ nir_shader_clone(void *mem_ctx, const nir_shader *s)
    ns->num_inputs = s->num_inputs;
    ns->num_uniforms = s->num_uniforms;
    ns->num_outputs = s->num_outputs;
-   ns->shared_size = s->shared_size;
    ns->scratch_size = s->scratch_size;
 
    ns->constant_data_size = s->constant_data_size;