[aur-general] delete SFML 1.6 packages

Hi, All the SFML 1.6 packages are broken and orphaned. The official package is the git version. I think they could all be delete. sfml1 https://aur.archlinux.org/packages.php?ID=49606 lib32-sfml https://aur.archlinux.org/packages.php?ID=42518 mingw32-sfml https://aur.archlinux.org/packages.php?ID=38509 Cheers.