isl_map_deltas: use isl_map_check_transformation
isl_map_deltas: use isl_map_check_transformation

Do so instead of using an open coded version.

Signed-off-by: Sven Verdoolaege <235c10dd23b819f81cdc9756a251746bc184cab6@gmail.com>

Meinersbur/isl,Meinersbur/isl,Meinersbur/isl,Meinersbur/isl