wheezy-stage4-lxde: don't install gksu
wheezy-stage4-lxde: don't install gksu

We want to use lxpolkit where possible. Where not, gksudo. We have no root
password by default so gksu is not very useful. Plus it installs a menu entry
to open a root terminal that won't work because of that.

RPi-Distro/spindle,thusoy/spindle,asb/spindle,MrNice/spindle