How to uninstall or remove hardening-includes software package from Ubuntu 16.04 LTS (Xenial Xerus)

You can uninstall or removes an installed hardening-includes package itself from Ubuntu 16.04 LTS (Xenial Xerus) through the terminal,

$ sudo apt-get remove hardening-includes

Uninstall hardening-includes including dependent package

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

$ sudo apt-get remove --auto-remove hardening-includes

Use Purging hardening-includes

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

$ sudo apt-get purge hardening-includes

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 hardening-includes