remove our port 80-443 redirector in favor of the inbuilt one

[djpnewton]

the nginx-certbox image has its own redirector which does not use a directory based webroot but instead redirects to a certbot internal server

https://github.com/JonasAlfredsson/docker-nginx-certbot/blob/master/src/nginx_conf.d/redirector.conf

[djpnewton]

tested on be.bitforge.me (which had failed to renew) and it worked