$ sudo apt-get remove libatd-ocaml 

Uninstall libatd-ocaml including dependent package

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

$ sudo apt-get remove --auto-remove libatd-ocaml 

Use Purging libatd-ocaml

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

$ sudo apt-get purge libatd-ocaml 

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 libatd-ocaml 

See Also,