To uninstall xpp just follow these instructions.
sudo apt-get remove xpp
This will remove just the xpp package itself.
sudo apt-get remove --auto-remove xpp
This will remove the xpp package and any other dependant packages which are no longer needed.
If you also want to delete your local/config files for xpp then this will work.
sudo apt-get purge xpp
Or similarly, like this xpp
sudo apt-get purge --auto-remove xpp
|Maintainer||Debian QA Group <firstname.lastname@example.org>|
|Description||X Printing Panel every printing option known to the CUPS print system (the cups package). Best results are available with usage of the appropriate PPD file for your printer. Each user can save their own customized printing preferences.|