Licences: 'replaced by' doesn't appear to have any functionality
We have a 'replaced by' field for licences. However, I cannot see that field is used anywhere, neither in templates, nor in .py files - except for the place where it is defined.
I seem to remember there once was some functionality of the field - namely, it replacing the other licence in the licence selection dropdown, so that the old licence is still available for showing, but no longer for usage with new uploads.
Was this removed intentionally or do I remember wrongly? Or is it a bug?