You can uninstall or removes an installed eegdev-plugins-free package itself from Ubuntu 16.10 (Yakkety Yak) through the terminal,
$ sudo apt-get remove eegdev-plugins-free
If you would like to remove eegdev-plugins-free and it's dependent packages which are no longer needed from Ubuntu,
$ sudo apt-get remove --auto-remove eegdev-plugins-free
If you use with purge options to eegdev-plugins-free package all the configuration and dependent packages will be removed.
$ sudo apt-get purge eegdev-plugins-free
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 eegdev-plugins-free