[aur-general] Cleanup arch2gem mess

I own several packages with the same functionality. packages https://aur.archlinux.org/packages/gem2arch/ https://aur.archlinux.org/packages/gem2arch-git/ should be removed as their upstream project is dead. In fact its functionality superseded by gem2arch-ruby. I am going to rename the *-ruby package to gem2arch later. https://aur.archlinux.org/packages/gem2arch-ruby-enterprise/ should also be removed. Bottom line. Please merge following packages: https://aur.archlinux.org/packages/gem2arch/ https://aur.archlinux.org/packages/gem2arch-git/ https://aur.archlinux.org/packages/gem2arch-ruby-enterprise/ into https://aur.archlinux.org/packages/gem2arch-ruby/