I would like to know how to get it not to show up in the server list.

Is there a way?

You can try ask FP for add your server to blacklist.

I believe disabling server.secure and such would unlist it, but I think there are other ways.

The proper way to hide your server from the list is to set this in the server.cfg file:
server.hostname ""
This basically makes your server not have a hostname and in turn makes it so it does not appear in the list anymore.