staging: unisys: Remove blank lines before/after braces in virthba.c

This patch removes unnecessary blank lines either before opening braces or
after closing braces, as reported by the checkpatch script.

Signed-off-by: Ken Depro <kenneth.depro@unisys.com>
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>