$ sudo apt-get remove qt-at-spi 

Uninstall qt-at-spi including dependent package

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

$ sudo apt-get remove --auto-remove qt-at-spi 

Use Purging qt-at-spi

If you use with purge options to qt-at-spi package all the configuration and dependent packages will be removed.

$ sudo apt-get purge qt-at-spi 

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 qt-at-spi 

See Also,