Remove registry key code that was for the now defunct XFire IM client.
Remove registry key code that was for the now defunct XFire IM client.

khonkhortisan/bzflag,khonkhortisan/bzflag,khonkhortisan/bzflag,khonkhortisan/bzflag,khonkhortisan/bzflag,khonkhortisan/bzflag,khonkhortisan/bzflag