The following will not be possible if your handle has services associated to it (domains, hosting, etc.). This process can only be used to deactivate handles that are unused.
To deactivate your Gandi handle:
log into the handle you want to deactivate,
and then from “My account” click on “Account Management” at the top of the page,
then, click on “Delete this contact” on the top of the page:
Proceed by clicking the “Submit” button after the short confirmation message.