Aktualisieren von SYSTEM_DOCUMENTATION.md

SYSTEM_DOCUMENTATION.md

@@ -180,16 +180,6 @@ lead_institutions
 - PUT /leads/contacts/{id}/details/{detail_id} - Detail bearbeiten
 - POST /leads/contacts/{id}/notes - Notiz hinzufügen
 
-## Monitoring Stack
-
-### Monitoring Stack
-- **Prometheus**: Metrics collection (port 9090)
-- **Grafana**: Dashboards (port 3000)
-- **Alertmanager**: Alerts (port 9093)
-- Exporters for PostgreSQL, Redis, Node, and containers
-
-Pre-configured dashboards and alerts for system health.
-
 ## Admin Panel
 
 ### Implementierte Features