You can uninstall or removes an installed libqtdee3 package itself from Ubuntu 14.04 LTS (Trusty Tahr) through the terminal,
$ sudo apt-get remove libqtdee3
If you would like to remove libqtdee3 and it's dependent packages which are no longer needed from Ubuntu,
$ sudo apt-get remove --auto-remove libqtdee3
If you use with purge options to libqtdee3 package all the configuration and dependent packages will be removed.
$ sudo apt-get purge libqtdee3
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 libqtdee3