staging: xgifb: XGIfb_setup(): delete redundant assignment

The global data is already initialized to zero.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/xgifb/XGI_main_26.c

@@ -1937,8 +1937,6 @@ static int __init XGIfb_setup(char *options)
 {
 	char *this_opt;
 
-	xgi_video_info.refresh_rate = 0;
-
 	if (!options || !*options)
 		return 0;