How to completely remove/uninstall graylog?

We’ve installed mongo 3.6, elasticsearch 5.x, and graylog 2.4 on a test server. We no longer need those applications and would like to wipe the installations. How can I completely remove them, especially graylog. I didn’t see anything in the documentation regarding uninstallation. Thank you kindly

he @phoeneous

depending how you installed the applications, you use can use the OS package manager to deinstall software (apt-get remove or yum remove) or simple deleted the folder when you had used the .tar for installation.