$ sudo apt-get remove fastahack 

Uninstall fastahack including dependent package

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

$ sudo apt-get remove --auto-remove fastahack 

Use Purging fastahack

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

$ sudo apt-get purge fastahack 

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 fastahack 

See Also,