Please remove from https://it.wikivoyage.org:
- https://www.mediawiki.org/wiki/Extension:Insider was never used and according to Roland (https://it.wikivoyage.org/w/index.php?title=Discussioni_utente:RolandUnger&diff=647541&oldid=647539) it's not working anymore.
- https://www.mediawiki.org/wiki/Extension:Listings has been replace several years ago from https://it.wikivoyage.org/wiki/Template:Listing
Thanks
Side note: The first, since it's not working, can be remove from any wiki, while the second can be removed from any Wikivoyage language version (all of them moved to the local template almost at the same time around 2013)