You can uninstall or removes an installed libkonq5-templates package itself from Debian 8 (Jessie) through the terminal,
$ sudo apt-get remove libkonq5-templates
If you would like to remove libkonq5-templates and it's dependent packages which are no longer needed from Ubuntu,
$ sudo apt-get remove --auto-remove libkonq5-templates
If you use with purge options to libkonq5-templates package all the configuration and dependent packages will be removed.
$ sudo apt-get purge libkonq5-templates
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 libkonq5-templates