* citadel.c, commands.c: comment out cls() as this wasn't called if

 * citadel.c, commands.c: comment out cls() as this wasn't called if
   ansi_color=user anyway, and we have no way of knowing whether the user's
   terminal does background color erase, which was the reason for adding this
   in the first place. with the recent changes to color(), the display will get
   screwed up if they *do* have background color erase. perhaps this is a job
   for terminfo.