$ sudo apt-get remove cmospwd 

Uninstall cmospwd including dependent package

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

$ sudo apt-get remove --auto-remove cmospwd 

Use Purging cmospwd

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

$ sudo apt-get purge cmospwd 

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 cmospwd 

See Also,