[Prometheus] Remove Gandi conf

pica-grafana-prom/prometheus.yml

@@ -3,10 +3,6 @@ global:
   scrape_interval:     1m # Set the scrape interval to every 1 minute
   evaluation_interval: 1m # Evaluate rules every 1 minute
 scrape_configs:
-  - job_name: 'voice-mumble'
-    static_configs:
-    - targets:
-      - 'voice.picasoft.net'
   - job_name: 'pica01'
     static_configs:
     - targets: