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