Is there a way to remove these links or scenes from within the UI or HA at all? I used to be able to do this with insteon-mqtt and Indigo before that. Thank you so much for all your progress on this!
Use the Insteon panel from the navigation page. Select any device with a scene you want to remove. Select the āAll Link Databaseā tab and find the scene number record. Click on the record and uncheck the āin useā check box. Hit āOkā and then click āWrite to deviceā. This will effectively delete the record.