$ sudo apt-get remove e2undel 

Uninstall e2undel including dependent package

If you would like to remove e2undel and it's dependent packages which are no longer needed from Ubuntu,

$ sudo apt-get remove --auto-remove e2undel 

Use Purging e2undel

If you use with purge options to e2undel package all the configuration and dependent packages will be removed.

$ sudo apt-get purge e2undel 

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 e2undel 

See Also,