`in_nord_house_05.nif` has collision and mesh issues

<img width="755" height="446" alt="Image" src="https://github.com/user-attachments/assets/d55b35b5-300c-4003-858c-7836f913204c" />

This shape can be deleted:

<img width="1821" height="854" alt="Image" src="https://github.com/user-attachments/assets/c82cd67d-ddb9-4e94-ac3a-d93d13eca26b" />