Cleanup for several series
Please, there's need for a general cleanup for the following series:
* https://trakt.tv/shows/alternate-history-hub (seasons 1 to 7 need to be removed)
* https://trakt.tv/shows/passato-e-presente (the "special episode" doesn't exist, it was a mistake and has been removed since weeks on TVDB)
* https://trakt.tv/shows/kurzgesagt-in-a-nutshell (many of the images are wrong and need to be refreshed)
Fixed and queued for a full image refresh.