[aur-general] Delete Package

[Padfoot]

Lightdm-gtk2-1.o.6-3 was orphaned. I took over this package to request 
the package be deleted.
https://aur.archlinux.org/packages/lightdm-gtk2/
An up to date gtk2 greeter for lightdm is now provided for with 
lightdm-gtk2-greeter-1.5.1-1

Cheers.