If you don't want your users to be able to access GQueues from the Apps menu anymore, you can uninstall GQueues from your domain following these steps.
Please Note: This will not delete your or any of your users' GQueues account or any of your data, it just removes GQueues from your domain so it no longer shows up in the Apps menu.
Remove GQueues from your domain
Log in to your Google Workspace Admin Console at https://admin.google.com and click on Apps then Google Workspace Marketplace apps.
Click the GQueues app name.
Click the Delete App button.
Confirm the app removal.