Stop server from trying to generate Herobrine structures after removing the mod?

[mellow schooner]

I noticed the mod keeps trying to add Herobrine structures on my server after I removed the mod. Anyway to remove this or clear a cache?

[broken meteor]

i dont believe it is trying to add herobrine structures but it doesn't recognize ones that already exist. i don't believe that there is a way to remove this unfortunately

[mellow schooner]

Is it going to cause any issues performance wise?