To uninstall ruby-factory-girl-rails just follow these instructions.
sudo apt-get remove ruby-factory-girl-rails
This will remove just the ruby-factory-girl-rails package itself.
sudo apt-get remove --auto-remove ruby-factory-girl-rails
This will remove the ruby-factory-girl-rails package and any other dependant packages which are no longer needed.
If you also want to delete your local/config files for ruby-factory-girl-rails then this will work.
sudo apt-get purge ruby-factory-girl-rails
Or similarly, like this ruby-factory-girl-rails
sudo apt-get purge --auto-remove ruby-factory-girl-rails
|Maintainer||Debian Ruby Extras Maintainers <firstname.lastname@example.org>|
|Description||provides integration between factory_girl and rails 3.2+|