I somehow removed the art file in this file and can't find it. I tried looking in meshes/i. Where is it?
I assume you mean that you altered the static object and not removed the data file:
1) save your mod
2) open the load file dialog
3) click "details"
4) sort by object type & find the altered object
5) with that object highleted hit delete
6) load your mod and save it.
You can also delete the object with Enchanted Editor.