You will need the Check-In permission to perform this action or direct access to the check-in station.
Click on "Events > Check-In > Stations" in the left hand navigation. Then select "Delete" from the drop down menu at the end of the row containing the station you want to delete. A confirmation message will appear. Click on "Yes" to finish.
Helpful Tips
The station will immediately no longer be authorized to perform any actions in the check-in system. Even if it was in the middle of a check-in.
Alternatively, resetting a station will also delete it from this list
On Windows/MacOS, go to Edit > Reset Station
On iOS/Android, tap on the settings icon in the lower right and choose Reset Station