server: remove dep on CEGUI
server: remove dep on CEGUI

fgouget/spice,mathslinux/spice,dezelin/spice,Fantu/spice,SPICE/spice,mathslinux/spice,alon/spice-server,alon/spice-server,fgouget/spice,fgouget/spice,elmarco/spice,ya-mouse/spice,dezelin/spice,ya-mouse/spice,mathslinux/spice,elmarco/spice,dezelin/spice,alon/spice-server,elmarco/spice,mathslinux/spice,Fantu/spice,SPICE/spice,mathslinux/spice,Fantu/spice,freedesktop-unofficial-mirror/spice__spice,freedesktop-unofficial-mirror/spice__spice,freedesktop-unofficial-mirror/spice__spice,SPICE/spice,dezelin/spice,Fantu/spice,ya-mouse/spice,freedesktop-unofficial-mirror/spice__spice,elmarco/spice,freedesktop-unofficial-mirror/spice__spice,dezelin/spice,elmarco/spice,alon/spice-server,fgouget/spice,alon/spice-server