To uninstall xbill just follow these instructions.
sudo apt-get remove xbill
This will remove just the xbill package itself.
sudo apt-get remove --auto-remove xbill
This will remove the xbill package and any other dependant packages which are no longer needed.
If you also want to delete your local/config files for xbill then this will work.
sudo apt-get purge xbill
Or similarly, like this xbill
sudo apt-get purge --auto-remove xbill
|Maintainer||Debian Games Team <firstname.lastname@example.org>|
|Home page||http://www.xbill.org/ security::antivirus, uitoolkit::athena, use::gameplaying, x11::application|
|Description||Get rid of those Wingdows Viruses! someone's trying to destroy your computers. The little people running around the screen are trying to infect your computers with Wingdows [TM], a virus cleverly designed to resemble a popular operating system. Your objective is to click the mouse on them, ending their potential threat. If one of the people reaches a computer, it will attempt to replace your operating system with the virus it carries. It will then attempt to run off the screen with your vital software.|