remove coredns specific env vars

compose/docker-compose.ee.yml

@@ -27,8 +27,6 @@ services:
       MQ_PORT: "443"
       MQ_SERVER_PORT: "1883"
       VERBOSITY: "1"
-      MANAGE_IPTABLES: "on"
-      PORT_FORWARD_SERVICES: "dns"
       METRICS_EXPORTER: "on"
       LICENSE_KEY: "YOUR_LICENSE_KEY"
       NETMAKER_ACCOUNT_ID: "YOUR_ACCOUNT_ID"