Delete a RetrospectiveProcessGroup Step

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

{
  "data": {
    "id": "<string>",
    "type": "retrospective_process_group_steps",
    "attributes": {
      "retrospective_process_group_id": "<string>",
      "retrospective_step_id": "<string>",
      "position": 123
    }
  }
}