server.events 0​

"Bradley": {
  "AnnounceNext": false,
  "Enabled": true,
  "MaximumTimeBetween": 30,
  "MinimumTimeBetween": 25,
  "NextRun": "1900-01-01T01:01:00"
},​

did you turn off the normal spawner?

Merged post

https://www.corrosionhour.com/rust-bradley-apc-command/

Should I set bradley.enabled 0?

I tested that and it did not work.  I would set bradley.respawndelayminutes  to a massively large number. like bradley.respawndelayminutes 999999999