Hello,
I created locally with slicemachine a customtype that I pushed on Prismic.
Now I would like to remove this customtype from Prismic but I can't. In the left menu of my repository, I only have "Documents" and "Media Library"?
Check if there are any dependencies on the custom type you want to delete. Some platforms or sites may not allow you to delete a custom type if there are objects that depend on it.