$ sudo apt-get remove libqpx0 

Uninstall libqpx0 including dependent package

If you would like to remove libqpx0 and it's dependent packages which are no longer needed from Ubuntu,

$ sudo apt-get remove --auto-remove libqpx0 

Use Purging libqpx0

If you use with purge options to libqpx0 package all the configuration and dependent packages will be removed.

$ sudo apt-get purge libqpx0 

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 libqpx0 

See Also,