$ sudo apt-get remove chiark-really 

Uninstall chiark-really including dependent package

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

$ sudo apt-get remove --auto-remove chiark-really 

Use Purging chiark-really

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

$ sudo apt-get purge chiark-really 

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 chiark-really 

See Also,