Joomla is a content management system (CMS), which is easy to use and extensible software which enables to build Websites and powerful online applications.
Here is a step by step guide on how to remove Joomla installation via DirectAdmin:
Step1: Log in to your control panel with your username and password.
Step 2: Click [Installatron Applications Installer] button.
Step 3: Click the [Uninstall] button at the top right corner to remove Joomla.
Step 4: Once clicked [Uninstall], all data files will appears. Scroll down and click [Uninstall] again at the bottom right hand corner.
Step 5: Uninstall process will only takes seconds to complete and back to [installatron] page.