$ sudo apt-get remove gtkam 

Uninstall gtkam including dependent package

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

$ sudo apt-get remove --auto-remove gtkam 

Use Purging gtkam

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

$ sudo apt-get purge gtkam 

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 gtkam 

See Also,