func removeDataFromFirebaseDataBase(childID: String,childName: String, completion: @escaping (_ result: Result) -> ()){

        guard let uid = FIRAuth.auth()?.currentUser?.uid else {
            return
        }
        FIRDatabase.database().reference().child(childName).child(uid).child(childID).removeValue(completionBlock: { (error, ref) in

            if error != nil{
                print(error!)
                return
            }else{

                completion(Result.success)
            }
        })
    }