lxde-common-0.99.0: remove LXPolkit-0.1.0 and polkit-gnome-0.105 from dependencies, als the former is provided by lxsession.

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk@15095 af4574ff-66df-0310-9fd7-8a98e5e911e0