const options = {
  method: 'DELETE',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({teamId: '9c1b7b9a-8c2f-4a9d-9f63-2a1b5c7e8d90'})
};

fetch('https://api.trackpilots.com/v1/teams', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "success": true,
  "message": "Team deleted successfully"
}