[aur-general] AUR cleanup policy

What's the policy wrt to packages that have been submitted years ago and are neither developed upstream nor maintained in the AUR since then? Just let them be or get rid of them as they're of no use? If there're old unmaintained packages foo and foo-git, is it OK to request removing at least one of them? Which one? https://aur.archlinux.org/packages/a4/ https://aur.archlinux.org/packages/a4-bzr/ The PKGBUILD need updating but it still builds and runs so I can pick it up, update and orphan it. I don't know which filetypes does it open (.odp is not recognized) and the editor doesn't work, so you can't create a new presentation from scratch. It's man page is of no help.