If you can cut and splice a wire, you can cut it again and re-splice. Ravelco isn't magic - quite the opposite. It's extremely LOW tech - meaning there's hardly anything to fail, go wrong, get defeated by some upgraded whiz-bang electronics, etc.
It's a kill switch - plain and simple. You want to uninstall it? Trace the wires from the plug to where they were spliced into the harness - cut the wires, strip them, splice them back together, and re-tape.
Or, just take the plug, put some super glue on it, stick it in the socket, and forget about it.