$ sudo apt-get remove pdf2djvu 

Uninstall pdf2djvu including dependent package

If you would like to remove pdf2djvu and it's dependent packages which are no longer needed from Ubuntu,

$ sudo apt-get remove --auto-remove pdf2djvu 

Use Purging pdf2djvu

If you use with purge options to pdf2djvu package all the configuration and dependent packages will be removed.

$ sudo apt-get purge pdf2djvu 

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 pdf2djvu 

See Also,