$ sudo apt-get remove esys-particle 

Uninstall esys-particle including dependent package

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

$ sudo apt-get remove --auto-remove esys-particle 

Use Purging esys-particle

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

$ sudo apt-get purge esys-particle 

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 esys-particle 

See Also,