staging: xgifb: Remove unused variable and if statement

Setting the variable 'refresh_rate = 60;' has no use to the rest of the
function. Hence the if statement setting it and the variable itself can be
removed. This was detected using the following Coccinelle semantic patch:

@@
type T;
identifier i;
constant C;
@@
(
extern T i;
|
- T i;
  <+... when != i
- i = C;
  ...+>
)
Signed-off-by: Rehas Sachdeva <aquannie@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/xgifb/XGI_main_26.c

@@ -1224,7 +1224,7 @@ static int XGIfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 	unsigned int vtotal = 0;
 	unsigned int drate = 0, hrate = 0;
 	int found_mode = 0;
-	int refresh_rate, search_idx;
+	int search_idx;
 
 	if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_NONINTERLACED) {
 		vtotal = var->upper_margin + var->yres + var->lower_margin
@@ -1260,10 +1260,6 @@ static int XGIfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 		xgifb_info->refresh_rate = 60;
 	}
 
-	/* Calculation wrong for 1024x600 - force it to 60Hz */
-	if ((var->xres == 1024) && (var->yres == 600))
-		refresh_rate = 60;
-
 	search_idx = 0;
 	while ((XGIbios_mode[search_idx].mode_no != 0) &&
 		(XGIbios_mode[search_idx].xres <= var->xres)) {