Uninstall just xserver-xorg-input-wacom
sudo apt-get remove xserver-xorg-input-wacom
This will remove just the xserver-xorg-input-wacom package itself.
Uninstall xserver-xorg-input-wacom and it's dependencies
sudo apt-get remove --auto-remove xserver-xorg-input-wacom
This will remove the xserver-xorg-input-wacom package and any other dependant packages which are no longer needed.
Purging your config/data too
If you also want to delete your local/config files for xserver-xorg-input-wacom then this will work.
Caution! Purged config/data can not be restored by reinstalling the package.
sudo apt-get purge xserver-xorg-input-wacom
Or similarly, like this xserver-xorg-input-wacom
sudo apt-get purge --auto-remove xserver-xorg-input-wacom