$ sudo apt-get remove cb2bib 

Uninstall cb2bib including dependent package

If you would like to remove cb2bib and it's dependent packages which are no longer needed from Ubuntu,

$ sudo apt-get remove --auto-remove cb2bib 

Use Purging cb2bib

If you use with purge options to cb2bib package all the configuration and dependent packages will be removed.

$ sudo apt-get purge cb2bib 

If you use purge options along with auto remove, will be removed everything regarding the package, It's really useful when you want to reinstall again.

$ sudo apt-get purge --auto-remove cb2bib 

See Also,