$ sudo apt-get remove kosd 

Uninstall kosd including dependent package

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

$ sudo apt-get remove --auto-remove kosd 

Use Purging kosd

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

$ sudo apt-get purge kosd 

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 kosd 

See Also,