DeleteScheduledDeployment

Permanently deletes a scheduled deployment action from a stack. This removes the schedule configuration entirely and cannot be undone. The schedule will no longer execute any future runs. This endpoint is used for all schedule types (custom, drift detection, and TTL). To temporarily stop a schedule without deleting it, use the pause endpoint instead. The delete is idempotent: deleting a schedule that no longer exists on the stack — for example a one-time TTL schedule that already fired and was removed automatically — succeeds and returns 200 rather than 404.