Give us this option to permanently remove fields/option sets.
Maybe the same for data types that have already been removed, with the possibility of removing all fields in it as a consequence.
“Ah, but it’s dangerous for the developer to delete something he didn’t want or that he would recover later.”
Well, that’s a developer’s problem. We have to know and assume the consequences. After all, with this option the removal confirmation would have already gone through two steps, soft delete and then hard delete.

