video: imxfb: Remove dead declaration of set_imx_fb_info()

Function set_imx_fb_info() is missing in the kernel code,
so remove the dead declaration.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

include/linux/platform_data/video-imxfb.h

@@ -79,5 +79,4 @@ struct imx_fb_platform_data {
 	void (*backlight_power)(int);
 };
 
-void set_imx_fb_info(struct imx_fb_platform_data *);
 #endif /* ifndef __MACH_IMXFB_H__ */