If you have installed manually then you can uninstall it by removing file but if you have install Wordpress from Softaculous cPanel then you have to
- Login to cPanel.
- Click on Softaculous Apps installer and then select “Installed apps” option.
- It will show all your installed applications.
- Now you can find Remove (X) option then click on it. You can also uninstall multiple application by selecting it and then click on “Remove completely” from drop down, click on “Go”.