$ sudo apt-get remove d-rats 

Uninstall d-rats including dependent package

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

$ sudo apt-get remove --auto-remove d-rats 

Use Purging d-rats

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

$ sudo apt-get purge d-rats 

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 d-rats 

See Also,