Follow these simple steps to delete an FTP user from the cPanel:

1. Sign-in to your cPanel account.
2. Go to the “Files” section, Tap on the “FTP Accounts”
3. Locate “FTP Accounts”, underneath it, click on the “Delete”
4. By clicking on the “Delete” your account will be permanently deleted.Warning: Do not click on the “Delete the Users Home Directory” button. Because all of your data inside your FTP User account will also be removed. Moreover, the data will be unrecoverable. Also, make sure you restore your data with a backup.