How to uninstall it?

[ceciver]

I just wanted to see how the autocompletion works, but I didn't like it and i'm unable to uninstall it

[marlonrichert]

How did you install it?

[truongsondq]

My personal comments:
There are many people who install the plugin according to the step-by-step instructions on a website, and website do not mention removal.
Good plug-ins have uninstall instructions, for example Oh-my-zsh:

Uninstalling Oh My Zsh

Oh My Zsh isn't for everyone. We'll miss you, but we want to make this an easy breakup.

If you want to uninstall oh-my-zsh, just run uninstall_oh_my_zsh from the command-line. It will remove itself and revert your previous bash or zsh configuration.

[marlonrichert]

I've now added uninstall instructions to the Readme.