Hiding a calendar from the hub

Is it possible to "hide" a specific calendar and stop it being pulled into the central Hub events list?

We have our central Hub site, which has an Events web part that pulls in all the Events from all hub sites. On one of the sites though, there's an additional Calendar been added by the site owner, which contains no information that's relevant to the whole site...is it possible to stop this one calendar from being fed into the central list?