You can uninstall or removes an installed libvncserver-config package itself from Ubuntu 14.04 LTS (Trusty Tahr) through the terminal,
$ sudo apt-get remove libvncserver-config
If you would like to remove libvncserver-config and it's dependent packages which are no longer needed from Ubuntu,
$ sudo apt-get remove --auto-remove libvncserver-config
If you use with purge options to libvncserver-config package all the configuration and dependent packages will be removed.
$ sudo apt-get purge libvncserver-config
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 libvncserver-config