A Shortcut can be deleted either by the creator of the Shortcut or the workspace admins.
To delete a Shortcut, open the OSlash dashboard. You can do that by either typing o/ in the address bar and pressing enter or by going to app.oslash.com.
Click on the three dots next to the Shortcut name on the dashboard. Select Delete and confirm your decision.
Deleting a Shortcut would allow the deleted Shortcut name to be used in the future in the workspace.