Deletes a user with the corresponding ID.
URL : /users/:id
Method : DELETE
Header :
"Content-type": "application/json"
"Authorization": "Bearer [valid Moderator token]"
Code : 204 No Content
Condition : Wrong token.
Code : 401 Unauthorized
Body :
{
"code": "InvalidCredentials",
"message": "caused by JsonWebTokenError: invalid signature"
}