How to Wipe My Database of WordPress

Clear the Database
1. Go to the 'Database' section of cPanel and click 'mySQL Databases.'
2. Scroll down to the list of installed databases, select the one associated with the WordPress install and click 'Delete Database.' If you have multiple databases installed and don't remember which one is the right one, go back to the cPanel, go to Fantastico or SimpleScripts, click on 'WordPress' and check the database there.

3. Click 'Delete Database' when the host asks 'Are you sure you wish to permanently remove the database?'
Delete WordPress Content
4. Go back to the cPanel.
5. Click 'File Manager' in the 'Files' section.
6. Navigate from the Root, or 'www,' section of the website to the directory in which WordPress is installed.
7. Select every file in the directory, or select the whole directory, and click the red 'X' for 'Delete.' The file manager prompts you to confirm this decision. Click 'OK' to have all of your WordPress files expunged.