$ sudo apt-get remove libqpdf13 

Uninstall libqpdf13 including dependent package

If you would like to remove libqpdf13 and it's dependent packages which are no longer needed from Ubuntu,

$ sudo apt-get remove --auto-remove libqpdf13 

Use Purging libqpdf13

If you use with purge options to libqpdf13 package all the configuration and dependent packages will be removed.

$ sudo apt-get purge libqpdf13 

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 libqpdf13 

See Also,