removed expired ports from x11-clocks

2011-05-01 x11-clocks/bdesktopclock: Upstream disapear and distfile is no more available
2011-05-01 x11-clocks/washerdryer: Upstream disapear and distfile is no more available
2011-05-01 x11-clocks/wmtz: Upstream disapear and distfile is no more available
2011-05-01 x11-clocks/xmms-alarm: Upstream disapear and distfile is no more available