sh: ap325rxa: Remove unused get_brightness LCDC callback

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/boards/mach-ap325rxa/setup.c

@@ -179,11 +179,6 @@ static int ap320_wvga_set_brightness(int brightness)
 	return 0;
 }
 
-static int ap320_wvga_get_brightness(void)
-{
-	return gpio_get_value(GPIO_PTS3);
-}
-
 static void ap320_wvga_power_on(void)
 {
 	msleep(100);
@@ -232,7 +227,6 @@ static struct sh_mobile_lcdc_info lcdc_info = {
 			.name = "sh_mobile_lcdc_bl",
 			.max_brightness = 1,
 			.set_brightness = ap320_wvga_set_brightness,
-			.get_brightness = ap320_wvga_get_brightness,
 		},
 	}
 };