A simple & easy to use module! Simply install the module and with a press of a button, all out of stock items are deleted! Tested on OC 18.104.22.168, this module should work fine on any 1.5.x editions.
If you have ANY questions/concerns/trouble leave a comment or email email@example.com. I will respond in 24 hours or less.
Special shout out to HostJars (teaching me how to make a module) & Opencart Forum user JdeJ (for the idea)