Air bag diagnostic module???
 

93 FD with airbag removed

Hey just wondering if anyone knows if this is anything to do with the car functions or just the airbag. Tried to search it and get links to eBay etc selling the part but no definitive answer if it is for the car diagnostics or airbag diagnostics. If it is only for the airbag would I need to keep it if I don't have any airbags? Thanks for the help!
https://cimg1.ibsrv.net/gimg/www.rx7...d52e3d7b5e.jpg