You can remove the part with the ban appeal at that address as it seems nobody is reading those emails or they take their time doing so
I don't think they work applying via that email. I'm not sure how often it's monitored if at all but if it's not or rarely is then it should probably be changed to direct people to meta instead as they're much more likely to get help or answers there.
It would be far better to have a ban appeal thread stickied to meta and insert the link to the topic in the ban message, keeping the whining in one place.