public void Delete(string userToDelete, UserAndOrganizationDTO userOrg)
{
var user = _usersDbSet
.Single(u =>
u.Id == userToDelete &&
u.OrganizationId == userOrg.OrganizationId);
ClearUserKudos(user);
UnassignUserFromWalls(userToDelete, userOrg.OrganizationId);
_userManager.RemoveLogins(userToDelete);
_usersDbSet.Remove(user);
_uow.SaveChanges(userOrg.UserId);
}