ros3 [1] filed a deletion request for hello-http-bin [2]: No longer using or maintaining this, was stripped of the maintainership a while ago, but noone new stepped up. Seems to me the safer option would be just purging it.
[1] https://aur.archlinux.org/account/ros3/ [2] https://aur.archlinux.org/pkgbase/hello-http-bin/
