The `[ProducesResponseType(StatusCodes.Status400BadRequest)]`
attribute was removed from the `Delete` method in the
`OutResController` class. This change simplifies the API
response documentation, leaving only the `204 No Content`
response explicitly defined. The method is no longer expected
to return a `400 Bad Request` status code, reflecting a change
in behavior or a decision to streamline the API's response
documentation.