Remove supurfluous log.debug

Co-Authored-By: Frank Elsinga <frank.elsinga@tum.de>

server/monitor-types/snmp.js

@@ -93,7 +93,6 @@ class SNMPMonitorType extends MonitorType {
         } catch (err) {
             heartbeat.status = DOWN;
             heartbeat.msg = `SNMP Error: ${err.message}`;
-            log.debug("monitor", `SNMP: ${heartbeat.msg}`);
         }
     }