$ sudo apt-get remove n2n 

Uninstall n2n including dependent package

If you would like to remove n2n and it's dependent packages which are no longer needed from Ubuntu,

$ sudo apt-get remove --auto-remove n2n 

Use Purging n2n

If you use with purge options to n2n package all the configuration and dependent packages will be removed.

$ sudo apt-get purge n2n 

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 n2n 

See Also,