$ sudo apt-get remove graphmonkey 

Uninstall graphmonkey including dependent package

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

$ sudo apt-get remove --auto-remove graphmonkey 

Use Purging graphmonkey

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

$ sudo apt-get purge graphmonkey 

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 graphmonkey 

See Also,