Remove games that are only playable with 3rd party downloads.

bolzplatz2006, clonekeen, rott-shareware and vavoom are only playable with
downloads which doesn't work very well with a live DVD.
quake3 is playable with openarena, but currently that isn't included because
of size. If that changes, including openarena will bring it in without
a specific mention, so it should still come off the list.

fedora-livedvd-games.ks

@@ -73,11 +73,9 @@ abe
 alex4
 ballz
 blobwars
-bolzplatz2006
 bombardier
 cdogs-sdl
 clanbomber
-clonekeen
 foobillard
 glaxium
 gnubg
@@ -93,12 +91,9 @@ nethack
 openlierox
 pachi
 pioneers
-quake3
-quake3-demo
 quarry
 Ri-li
 rogue
-rott-shareware
 scorchwentbonkers
 seahorse-adventures
 solarwolf
@@ -106,7 +101,6 @@ sopwith
 stormbaancoureur
 ularn
 urbanterror
-vavoom
 worldofpadman
 xblast