[aur-general] Delete request: run_bin32_gtk

[Techlive Zheng]

[run_bin32_gtk][1] uses deprecated lib32 directory
(/opt/lib32/usr/lib) and has not updated and required since its first
submission,so I think it is okey to delete it.

[1]:https://aur.archlinux.org/packages.php?ID=27419