eeepc-laptop: no need to check argument of set_brightness()

We already tell the backlight class our maximum brightness value; it
will validate the user requested values for us.
Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
Signed-off-by: Len Brown <len.brown@intel.com>

drivers/platform/x86/eeepc-laptop.c

@@ -326,7 +326,6 @@ static int read_brightness(struct backlight_device *bd)
 
 static int set_brightness(struct backlight_device *bd, int value)
 {
-	value = max(0, min(15, value));
 	return set_acpi(CM_ASL_PANELBRIGHT, value);
 }