How to remove ticket state?

Development
#1

curl --insecure -X PUT -u : http://www.mysite.com/api/v1/ticket_states/8 -d @body.json

{
 "id": 8,
 "name": "False Positive",
 "state_type_id": null,
 "next_state_id": null,
 "ignore_escalation": false,
 "active": false,
 "note": "some note"
}

I’m trying with the API to make an update to “ticket state” 8 and not being active, But It’s Didn’t work.
The Create TimeStamp and the Update TimeStamp is equal.
Someone can help me?
image

How can I remove this ticket state on my system?