The logical way to remove the AlienVault USM Appliance Sensor is:
- Go to Configuration > Deployment > Sensors.
- Select the sensor.
- Click Delete Selected.
You may get an error message similar to below:
Sorry, sensor not deleted. If you do that, One asset will be misconfigured: "sensor-name".
In this case you need to go to the asset list (Environment > Assets & Groups), edit the corresponding asset, and de-select the sensor from there. You should be able to remove the sensor afterwards.