$ sudo apt-get remove elpa-deferred 

Uninstall elpa-deferred including dependent package

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

$ sudo apt-get remove --auto-remove elpa-deferred 

Use Purging elpa-deferred

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

$ sudo apt-get purge elpa-deferred 

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 elpa-deferred 

See Also,