Hello,
Good practice in OSM is to keep the history.
If a new restaurant opens and replaces a previous one, it is strongly recommended to keep the existing node and just change the tags.
https://wiki.openstreetmap.org/wiki/Keep_the_history

(And yes, in this case, it looks like a  newbie had created a duplicate, so there was at least one node to delete, but not all of them. 😉)

Don’t worry, it’s already fixed by now.