Yes, you can. It can only be done if all the players have left the team, and only then do you have the opportunity to leave your own team. In this case, the team is considered to be deleted and is not displayed in the search results. All open positions are also deleted.
To delete a team:
1. Enter the "Settings" or "Team profile".
2. Click the "Delete Team" button (the "Delete Team" button will become active after all team members have left the team).