$ sudo apt-get remove gitpkg 

Uninstall gitpkg including dependent package

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

$ sudo apt-get remove --auto-remove gitpkg 

Use Purging gitpkg

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

$ sudo apt-get purge gitpkg 

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 gitpkg 

See Also,