[aur-general] remove requet (teamviewer8)

[Jorge Barroso]

Hi, I think we should remove teamviewer8[1], as there's already a 
teamviewer[2] package up to date with the same version...

https://aur.archlinux.org/packages/teamviewer8/ [1]

https://aur.archlinux.org/packages/teamviewer/ [2]

thanks