$ sudo apt-get remove freecol 

Uninstall freecol including dependent package

If you would like to remove freecol and it's dependent packages which are no longer needed from Ubuntu,

$ sudo apt-get remove --auto-remove freecol 

Use Purging freecol

If you use with purge options to freecol package all the configuration and dependent packages will be removed.

$ sudo apt-get purge freecol 

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 freecol 

See Also,