[DEPRECATED] Delete a Custom Field

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

{
  "data": {
    "id": "128",
    "type": "custom_fields",
    "attributes": {
      "slug": "repudiandae-necessitatibus-voluptate-porro",
      "description": "Quis eaque temporibus in.",
      "enabled": true,
      "position": 1,
      "updated_at": "2025-12-05T21:23:33.043-08:00",
      "created_at": "2025-12-05T21:23:30.882-08:00",
      "kind": "text",
      "label": "Repudiandae necessitatibus voluptate porro.",
      "shown": [],
      "required": []
    },
    "relationships": {
      "options": {
        "data": []
      }
    }
  }
}