Remove default SSH allow rule from UFW (#2887)

* UFW: limit LocalSend (53317) to LAN and remove default SSH (22) rule

* Revert LocalSend change and drop SSH allow rule

install/first-run/firewall.sh

@@ -6,9 +6,6 @@ sudo ufw default allow outgoing
 sudo ufw allow 53317/udp
 sudo ufw allow 53317/tcp
 
-# Allow SSH in
-sudo ufw allow 22/tcp
-
 # Allow Docker containers to use DNS on host
 sudo ufw allow in proto udp from 172.16.0.0/12 to 172.17.0.1 port 53 comment 'allow-docker-dns'