If an Analytics Edge connector license expires, trying to run a query that uses it will result in an error. You must either remove any queries that use it or buy a license.
Expired connectors will automatically disable themselves (expiry date 1999-12-31). To uninstall a connector, open the License wizard and click on the uninstall link for the connector.
Note: if you have upgraded the connector since first installed, you may need to remove the previous version as well.