$ sudo apt-get remove libcompfaceg1 

Uninstall libcompfaceg1 including dependent package

If you would like to remove libcompfaceg1 and it's dependent packages which are no longer needed from Ubuntu,

$ sudo apt-get remove --auto-remove libcompfaceg1 

Use Purging libcompfaceg1

If you use with purge options to libcompfaceg1 package all the configuration and dependent packages will be removed.

$ sudo apt-get purge libcompfaceg1 

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 libcompfaceg1 

See Also,