archweb: Disable access log for network manager check file

Fully static file and we are not interested in the requests to that.
Signed-off-by: Florian Pritz <bluewind@xinu.at>

roles/archweb/templates/nginx.d.conf.j2

@@ -57,6 +57,7 @@ server {
     include snippets/letsencrypt.conf;
 
     location /check_network_status.txt {
+        access_log off;
         add_header Cache-Control "max-age=0, must-revalidate";
         return 200 'NetworkManager is online';
     }