Detach a single location from a job post. The {id} here is the job_post_locations row id (returned by list/create), not the job_post_id, office_id, or custom_location_id; resolve it via GET /v3/job_post_locations?parent=job_post&ids=<job_post_id> when you only have the post. The referenced office and job_board_custom_locations rows are unaffected — this only removes the attachment from the post.