Cómo eliminar la fila en la vista de tabla Datos principales. Swift 3

He estado investigando cómo eliminar una fila de una vista de tabla cuyos datos están en Core Data. No puedo encontrar nada en línea que me ayude con mi código. Soy realmente nuevo con Core Data, así que no entiendo mucho.

Gracias por adelantado

Este es mi código

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)

    guard let appDelegate = UIApplication.shared.delegate as? AppDelegate else { return}

    let managedContext = appDelegate.persistentContainer.viewContext

    let fetchRequest = NSFetchRequest<NSManagedObject>(entityName: "OfficialPT")
    fetchRequest.sortDescriptors = [NSSortDescriptor(key:"createdAt",ascending:false)]


    do {
        AirForceDatabase = try managedContext.fetch(fetchRequest)
    } catch let error as NSError {
        print("Could not fetch. \(error), \(error.userInfo)")
    }
}

func SideMenus ()
{
    if revealViewController() != nil {
        MenuButton.target = revealViewController()
        MenuButton.action = #selector(SWRevealViewController.revealToggle(_:))
        revealViewController().rearViewRevealWidth = 275
        revealViewController().rightViewRevealWidth = 160

        // profileButton.target = revealViewController()
        // profileButton.action = #selector(SWRevealViewController.rightRevealToggle(_:))

        view.addGestureRecognizer(self.revealViewController().panGestureRecognizer())


    }
}

}

Historial de extensionesPTViewController: UITableViewDataSource {

func tableView(_ tableView: UITableView,
               numberOfRowsInSection section: Int) -> Int {
    return AirForceDatabase.count
}


func tableView(_ tableView: UITableView,
               cellForRowAt indexPath: IndexPath) -> UITableViewCell {




    if let cell = tableView.dequeueReusableCell(withIdentifier: "Cell",for: indexPath) as? HistoryPTTableViewCell {


    let person = AirForceDatabase[indexPath.row]

       cell.OfficialAbsLbl!.text = person.value(forKeyPath: "officialAbs")! as? String
        cell.OfficialPushLbl!.text = person.value(forKeyPath: "officialPush")! as? String
        cell.OfficialSitLbl!.text = person.value(forKeyPath: "officialSit")! as? String
        cell.OfficialRunLbl!.text = person.value(forKeyPath: "officialRun")! as? String
        cell.officialTotal!.text = person.value(forKeyPath: "totalScore")! as? String
        cell.officialdateCreated.text = person.value(forKeyPath: "createdAt")! as? String







    return cell
}
return UITableViewCell()

}

} extensión HistoryPTViewController: UITableViewDelegate {

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    tableView.deselectRow(at: indexPath, animated: true)

     let person = AirForceDatabase[indexPath.row]
    //Convert String to Double
    if let score = person.value(forKeyPath: "totalScore")! as? String, let doubleScore = Double(score) {

        officialTotalScore = doubleScore
        //officialTotalScore = Double(score)

        print("Score \(officialTotalScore)")

    }
    var createdat :String!

    CompostiveLbl.text = "Composite Score:\n\(officialTotalScore)%"
    createdat = person.value(forKeyPath: "createdAt")! as? String
    print(createdat + "CREATED")
    if officialTotalScore >= 90 {
        print("Excellent")

        officialFinalScoreLbl.text = "Fitness Level:\n Excellent"
    }else if officialTotalScore >= 75 && officialTotalScore <= 89.9 {


        print("Composite Score: Satisfactory")
        officialFinalScoreLbl.text = "Fitness Level:\n Satisfactory"

    }else if  officialTotalScore <= 75 {

        print("Composite Score: Unsatisfactory")
        officialFinalScoreLbl.text = "Fitness Level:\n  Unsatisfactory"
    }





    let dateFormatter = DateFormatter()
    dateFormatter.dateStyle = DateFormatter.Style.long
    dateFormatter.dateFormat = "yyyy-MM-dd"
    let convertedDate = dateFormatter.date(from: createdat)
    dateFormatter.dateFormat = "MMM dd yyyy"
    let date = dateFormatter.string(from: convertedDate!)

    NextPTLbl.text = "Test Date:\n" + date
}


func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {

       let person = AirForceDatabase[indexPath.row]
    if editingStyle == .delete {






   }


}

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