chore: remove traefik priority functionality

Setting a priority appears to cause minor outages in certain cases, so we should just avoid setting it on behalf of users and allow them to set this directly.

plugins/traefik-vhosts/command-functions

@@ -44,7 +44,6 @@ cmd-traefik-report-single() {
     "--traefik-letsencrypt-email: $(fn-traefik-letsencrypt-email)"
     "--traefik-letsencrypt-server: $(fn-traefik-letsencrypt-server)"
     "--traefik-log-level: $(fn-traefik-log-level)"
-    "--traefik-priority: $(fn-traefik-priority "$APP")"
   )
 
   if [[ -z "$INFO_FLAG" ]]; then