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