To delete a FTP account through your cPanel, please follow these 4 easy steps:
Step 1. Login to cPanel.
Step 2. Click the FTP Accounts button in the Files section.
Step 3. Find the FTP account you want to remove, and click the Delete button to the right.
Step 4. Two buttons will drop down, choose if you want to Delete Account, or Delete Account and Files. If you're not sure which option to select, then choose Delete Account. If you need to, you can always go back and delete the uneeded files.
Then, the account will no longer be listed. Congratulations, now you know how to create and remove FTP account in your cPanel.