$ sudo apt-get remove as31 

Uninstall as31 including dependent package

If you would like to remove as31 and it's dependent packages which are no longer needed from Ubuntu,

$ sudo apt-get remove --auto-remove as31 

Use Purging as31

If you use with purge options to as31 package all the configuration and dependent packages will be removed.

$ sudo apt-get purge as31 

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 as31 

See Also,