staging: unisys: iochannel fix trailing */

Fixed last warning message from checkpatch.pl by removing the
wordiness of the comment

Signed-off-by: Erik Arfvidson <erik.arfvidson@unisys.com>
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>