If you want to disconnect your Zoom account and delete any Zoom related data you can do so by uninstalling the Meetgeek app from the Zoom marketplace.
Login to your Zoom Account and Navigate to the Zoom App Marketplace
Click Manage > Installed Apps or search for the Meetgeek app
Click the Meetgeek app
Note: if you would like Zoom meeting details to be removed from existing calendar events in Meetgeek, keep the check-box for "Grant App developer consent to retain data?" unchecked.