fix(docker) : retire volume ferme du docker-compose prod

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

infra/prod/docker-compose.yml

@@ -11,7 +11,6 @@ services:
       - /var/www/sirh:/var/www/maintenance/sirh
       - /var/www/lesstime:/var/www/maintenance/lesstime
       - /var/www/inventory:/var/www/maintenance/inventory
-      - /var/www/ferme:/var/www/maintenance/ferme
     extra_hosts:
       - "host.docker.internal:host-gateway"
     restart: unless-stopped