You can uninstall or removes an installed geneatd package itself from Ubuntu 16.04 LTS (Xenial Xerus) through the terminal,
$ sudo apt-get remove geneatd
If you would like to remove geneatd and it's dependent packages which are no longer needed from Ubuntu,
$ sudo apt-get remove --auto-remove geneatd
If you use with purge options to geneatd package all the configuration and dependent packages will be removed.
$ sudo apt-get purge geneatd
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 geneatd