Hi Brian,
We don’t have a filter for this now but I’ve just created an issue to be able to do this in a future version. For now the easiest way to do it is to hide the options via CSS like so:
#event-categories #tribe_events_cat-24,
#event-categories #tribe_events_cat-31 {
display: none;
}
Replace the numbers with the id’s of the categories you want to hide. You can add this to your themes style.css file or the Community plugin’s CSS by making a copy of /wp-content/plugins/the-events-calendar-community-events/resources/tribe-events-community.css and placing in an ‘events/community’ folder within your theme.
I hope that helps!