Hi Gary,
I would recommend heading into your site’s wp-admin and heading to Events → Settings → Display. Once there, you should see an option called “Events template”. Try out every single template option available there—after each template option, save your changes and then take another look at the page and see if the sidebar is gone.
If none of the templates work, then I would recommend adding CSS like the following to the bottom of your theme’s style.css file:
body.post-type-archive-tribe_events main.l-content {
width: 100% !important;
}
body.post-type-archive-tribe_events .default_sidebar {
display: none !important;
}
☝️ This should help. We won’t be able to provide further assistance with custom coding, so if you want to further refine this custom code you would have to take the reins on doing that on your own—but I hope this helps you get started!
Cheers,
George