Delete a FormFieldPosition

curl --request DELETE \
  --url https://api.rootly.com/v1/form_field_positions/{id} \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "id": "779eae9a-e124-4945-87ac-c6de7beba702",
    "type": "form_field_positions",
    "attributes": {
      "form_field_id": "a1a588e9-1471-4dfe-b6ea-69feb0b0d8d3",
      "form": "slack_update_incident_form",
      "position": 1
    }
  }
}