$ sudo apt-get remove httpie 

Uninstall httpie including dependent package

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

$ sudo apt-get remove --auto-remove httpie 

Use Purging httpie

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

$ sudo apt-get purge httpie 

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 httpie 

See Also,