It says you’re using the archived HACS version of the integration. For it to go away you need to remove the HACS Integration and switch to the built in integration…
Then you’ll be able to remove the HACS integration and the warning.
So I have to fully delete the complete path (integration, component) and have to reinstall the integration and reconfigure.
That sounds not that good. (I hate these actions)
But thanks for the information.