Deletion of IATA class codes

Comment: to International Air Transport Association, per . It probably warrants a mention there, per the single ref in the article (which is a dead link but http://web.archive.org/web/20060620191422/http://www.atpco.net/atpco/download/rbd_iata_res728.pdf available at archive.org
Stance: merge
Cited policy: Wikipedia:Notability (WP:GNG)