If you decide to not use RV Site Builder anymore, you can remove it from your website anytime by doing this:
Once you log into cPanel, look under 'Software/Services'.
Click 'RVSiteBuilder' and when it loads, you should see your projects(sites).
Click 'Remove' and at the bottom of the pop-up, you should see something like 'remove published folder'. Check that box and then click continue.
Finish there or do whatever it says. That will remove your RV Site Builder site.