$ sudo apt-get remove ranger 

Uninstall ranger including dependent package

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

$ sudo apt-get remove --auto-remove ranger 

Use Purging ranger

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

$ sudo apt-get purge ranger 

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 ranger 

See Also,