backlight: Remove trivial get_brightness implementations

Since backlight core returns props.brightness in case get_brightness
is not implemented trivial implementations are not needed anymore.

Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/platform/x86/samsung-q10.c

@@ -46,13 +46,7 @@ static int samsungq10_bl_set_intensity(struct backlight_device *bd)
 	return 0;
 }
 
-static int samsungq10_bl_get_intensity(struct backlight_device *bd)
-{
-	return bd->props.brightness;
-}
-
 static const struct backlight_ops samsungq10_bl_ops = {
-	.get_brightness = samsungq10_bl_get_intensity,
 	.update_status	= samsungq10_bl_set_intensity,
 };