As part of undeploying the MachineVision extension all its event data and event schemas ought to be removed from production
- mark SuggestedTagsAction as deprecated on DataHub
- delete the schema on metawiki. metawiki isn't used at all anyway, this can be done now.
- remove from EventLogging streams and delete the EventStreamConfig entry (patch)
- stop refining events (patch)
[] drop the Hive table and delete the underlying data covered in T360994
- Optional: delete the schema