How to uninstall or remove haddock-interface-21 software package from Debian 8 (Jessie)

You can uninstall or removes an installed haddock-interface-21 package itself from Debian 8 (Jessie) through the terminal,

$ sudo apt-get remove haddock-interface-21

Uninstall haddock-interface-21 including dependent package

If you would like to remove haddock-interface-21 and it's dependent packages which are no longer needed from Ubuntu,

$ sudo apt-get remove --auto-remove haddock-interface-21

Use Purging haddock-interface-21

If you use with purge options to haddock-interface-21 package all the configuration and dependent packages will be removed.

$ sudo apt-get purge haddock-interface-21

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 haddock-interface-21