How do I empty the home/user/

I just deleted my old WordPress installation, via ftp, and upon trying to 1-click install a new instance of it, I was sent an email saying that an installationw as unable to be setup, because:

The problem was directory /home/user/ is not empty! Please re-install, specifying an empty (or new) directory.

Any help is appreciated. Thanks people.

There may be a hidden file (e.g. .htacccess) in the directory. Configure your FTP client to display all files and then try again.
If you get a ‘permission denied’ message when attempting to remove a file, contact Support for further assistance.
All the best -