Resolved Navmeshsurface undeleteable after update to 2022.2

Since updating to 2022.2, i cant get rid of that navmeshsurface. I deleted everything in my scene and it still persists. Any idea why/how? Thanks in advance

P.s. its the same if i delete everything outside playmode

 

For anyone stumbling over this in the future: you have to bring up the obsolete AI window again and hit clear there to fix this

 

The point here is, you baked the NavMeshArea, you can delete the generated NavMesh file which contains the baked data.

That should clear the Area aswell.