You can uninstall or removes an installed gir1.2-bamf-3 package itself from Ubuntu 16.04 LTS (Xenial Xerus) through the terminal,
$ sudo apt-get remove gir1.2-bamf-3
If you would like to remove gir1.2-bamf-3 and it's dependent packages which are no longer needed from Ubuntu,
$ sudo apt-get remove --auto-remove gir1.2-bamf-3
If you use with purge options to gir1.2-bamf-3 package all the configuration and dependent packages will be removed.
$ sudo apt-get purge gir1.2-bamf-3
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 gir1.2-bamf-3