[aur-general] delete kernel26-slk && nvidia-slk

[Ike Devolder]

https://aur.archlinux.org/packages.php?ID=36738 (kernel26-slk)

i will no longer support it, and you can delete it because there are
definatly enough kernels available thru aur

with it nvidia-slk can be deleted too

https://aur.archlinux.org/packages.php?ID=36769 (nvidia-slk)

if you should doubt, i maintain these packages (BlackEagle)

thx