Please reference our Themer’s Guide, copy this file into your child theme’s Themer’s Guide directory: /wp-content/plugins/the-events-calendar-community-events/src/views/community/edit-event.php, and then comment out this part of that file: tribe_get_template_part( ‘community/modules/cost’ );
That should do it (or at least get you started down the right path for your customization)!