[DEPRECATED] Delete a workflow custom field selection

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

{
  "data": {
    "id": "1",
    "type": "workflow_custom_field_selections",
    "attributes": {
      "custom_field_id": 167,
      "workflow_id": "294abb6b-2941-40e0-8b55-27ed5c7af3e2",
      "incident_condition": "ANY",
      "values": [],
      "selected_option_ids": []
    }
  }
}