(when display-graphics-p
(global-unset-key (kbd "C-z")))
Also, though this works with Emacs running as a server, I find it better to just quit emacsclient instead of learning to do something different depending on what environment it is running. https://structurizr.com/help/lite
EDIT: The one above is the free tier, they have an on-premises paid version: https://structurizr.com/products
[1] https://github.com/mickeynp/combobulate