$ sudo apt-get remove equivs 

Uninstall equivs including dependent package

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

$ sudo apt-get remove --auto-remove equivs 

Use Purging equivs

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

$ sudo apt-get purge equivs 

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 equivs 

See Also,