To uninstall xwallpaper just follow these instructions.
sudo apt-get remove xwallpaper
This will remove just the xwallpaper package itself.
sudo apt-get remove --auto-remove xwallpaper
This will remove the xwallpaper package and any other dependant packages which are no longer needed.
If you also want to delete your local/config files for xwallpaper then this will work.
sudo apt-get purge xwallpaper
Or similarly, like this xwallpaper
sudo apt-get purge --auto-remove xwallpaper
|Maintainer||Sebastian Reichel <email@example.com>|
|Description||utility for setting image files as X wallpaper JPEG, PNG, and XPM file formats are supported, all of them being configurable and therefore no fixed dependencies.|