video: fbdev: sh_mobile_lcdcfb: Remove sh_mobile_lcdc_check_var() declaration

As of commit 0fe66f32 ("fbdev/sh_mobile: remove
sh_mobile_lcdc_display_notify"), there is no longer a need for a foward
declaration of sh_mobile_lcdc_check_var().
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Helge Deller <deller@gmx.de>

drivers/video/fbdev/sh_mobile_lcdcfb.c

@@ -531,9 +531,6 @@ static void sh_mobile_lcdc_display_off(struct sh_mobile_lcdc_chan *ch)
 		ch->tx_dev->ops->display_off(ch->tx_dev);
 }
 
-static int sh_mobile_lcdc_check_var(struct fb_var_screeninfo *var,
-				    struct fb_info *info);
-
 /* -----------------------------------------------------------------------------
  * Format helpers
  */