Although only few will ever want to do that I will now describe the proper way to completely uninstall Picasso96.
If you used the installer script for installation it will also allow you to uninstall your current Picasso96 configuration. Just run the install script and select the Uninstall option. The script will try to guess as many details as possible and will only ask you about details it could not decide automatically. If you used the default directories during installation uninstalling will be even easier for you.
Otherwise you will have to locate the different parts of the installation manually. Do you remember I suggested that you should use the installer script? :-)