backlight: Remove unneeded owner field

Remove uneeded owner field from backlight_properties structure.

Nothing uses it and it is unlikely that it will ever be used. The
backlight class uses other means to ensure that nothing references
unloaded code.

Based on a patch from Dmitry Torokhov <dtor@insightbb.com>

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>

drivers/video/backlight/hp680_bl.c

@@ -96,7 +96,6 @@ static int hp680bl_get_intensity(struct backlight_device *bd)
 }
 
 static struct backlight_properties hp680bl_data = {
-	.owner		= THIS_MODULE,
 	.max_brightness = HP680_MAX_INTENSITY,
 	.get_brightness = hp680bl_get_intensity,
 	.update_status  = hp680bl_set_intensity,