$ sudo apt-get remove emdebian-crush 

Uninstall emdebian-crush including dependent package

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

$ sudo apt-get remove --auto-remove emdebian-crush 

Use Purging emdebian-crush

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

$ sudo apt-get purge emdebian-crush 

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 emdebian-crush 

See Also,