TrialnError [1] filed a deletion request for haxe3-bin [2]: haxe got promoted to community and the maintainer dropped the -bin package. Nobody stepped up to maintain the -bin PKGBUILD after that, so there seems to be no issue with the repo package which makes it reasonable to remove the -bin PKGBUILD.
[1] https://aur.archlinux.org/account/TrialnError/ [2] https://aur.archlinux.org/pkgbase/haxe3-bin/
