Sometime around 2016 I purchased this stamp (part of a stamp packet). I identified it as France Scott 3303.

Fast forward to today and I find the stamp is no longer listed in the Scott catalog (2021 edition). France Scott numbers 3303-3305 are gone, however, the "Subject Index of French Commemorative Issues" still lists 3303-3305 as Harry Potter Characters. Any ideas as to why Scott delisted this issue?
Thanks,
Robert