$ sudo apt-get remove libautounit2 

Uninstall libautounit2 including dependent package

If you would like to remove libautounit2 and it's dependent packages which are no longer needed from Ubuntu,

$ sudo apt-get remove --auto-remove libautounit2 

Use Purging libautounit2

If you use with purge options to libautounit2 package all the configuration and dependent packages will be removed.

$ sudo apt-get purge libautounit2 

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 libautounit2 

See Also,