mesa: Silence unused parameter warnings

mesa: Silence unused parameter warnings

Neither shProg nor name was used.  Remove them both.

main/shader_query.cpp:779:53: warning: unused parameter ‘shProg’ [-Wunused-parameter]
 program_resource_location(struct gl_shader_program *shProg,
                                                     ^
main/shader_query.cpp:780:72: warning: unused parameter ‘name’ [-Wunused-parameter]
                           struct gl_program_resource *res, const char *name,
                                                                        ^

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>
Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>