Is there a way to edit a mod so that you can delete a cell and return it to its vanilla state?

Basically, there is an abanonded mod who has a building and interior set aside in one cell. I LOVE this building and interior.

However, 2 cells over is stuff that I dont want, have no relation to the functioning of this other interior cell (no ownership, scripts, etc.).

So is there a way I can just keep the building and get rid of everything else?