fix: revert 7e9d18b

Due to some investigations made in #158, the default IPv6 configuration will be removed again

resources/klipper_webui_nginx.cfg

@@ -2,7 +2,6 @@
 
 server {
     listen 80;
-    listen [::]:80;
 
     access_log /var/log/nginx/<<UI>>-access.log;
     error_log /var/log/nginx/<<UI>>-error.log;
@@ -71,4 +70,4 @@ server {
     location /webcam4/ {
         proxy_pass http://mjpgstreamer4/;
     }
-}
+}