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