Easy way to remove navigation bar back button title from all screens

EmptyBackBarButtonItemLabel.swift

// Parent View Controller
class ViewController: UIViewController {
   override func viewDidLoad() {
      super.viewDidLoad()
      navigationItem.clearBackBarButtonItemLabel()
   }
}


// Helper extension
extension UINavigationItem {
    func clearBackBarButtonItemLabel() {
        backBarButtonItem = UIBarButtonItem(title:"", style:.plain, target:nil, action:nil)
    }
}