deleted ADR asset def bullet

Author: bishal41

articles/iot-operations/troubleshoot/known-issues.md

@@ -62,8 +62,6 @@ This article lists the known issues for Azure IoT Operations.
 
 ## Connector for OPC UA
 
-- Azure Device Registry asset definitions let you use numbers in the attribute section while OPC supervisor expects only strings.
-
 - When you add a new asset with a new asset endpoint profile to the OPC UA broker and trigger a reconfiguration, the deployment of the `opc.tcp` pods changes to accommodate the new secret mounts for username and password. If the new mount fails for some reason, the pod does not restart and therefore the old flow for the correctly configured assets stops as well.
 
 - The subject name and application URI must exactly match the provided certificate. Because there's no cross-validation, any errors could cause the OPC UA servers to reject the application certificate.