The simultaneous delete of cluster/node actions while actual cluster/node
deletion is on-going causes DB deadlocks. Removing the clean-up and instead
having users run the senlin-manage script periodically to purge the action
table is better way to handle this.
Change-Id: If65d8006150788fff35ecd6eddec0a761e9b4cff
Closes-Bug: 1861445