$ sudo apt-get remove freesci 

Uninstall freesci including dependent package

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

$ sudo apt-get remove --auto-remove freesci 

Use Purging freesci

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

$ sudo apt-get purge freesci 

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 freesci 

See Also,