title: Remove back button when using custom uinavigationbar with uinavigationcontroller
body: <p>I'm having trouble finding a way to remove a 'ghost' back button (nothing but a blue back arrow) when I initialize my uinavigationcontroller with a custom uinavigationbar. When I click that back button, I then see my custom navigationbar, but I would like to not have to click that back button.</p>
  
  <p>I've tried almost all other solutions, including setHidesBackButton, etc. and playing with the order in which I call these functions. </p>
  
  <pre><code>class TabsVC : UITabBarController {
  
  func setupTabBar() {
      // setup feed tab
      let navVC = UINavigationController(navigationBarClass: NavBar.self, toolbarClass: nil)
  
      self.navigationItem.setHidesBackButton(true, animated: false)
  
      let feedVC = FeedVC()
      navVC.pushViewController(feedVC, animated: false)
      let feedIcon = UIImage.fontAwesomeIcon(name: .home, textColor: ColorConstants.baseColor, size: CGSize(width: 40, height: 40))
      navVC.tabBarItem = UITabBarItem(title: "", image: feedIcon, tag: 1)
  
      // other tabs stuff
  }
  
  class NavBar : UINavigationBar {
  
  func prepare() {
      let item = UINavigationItem(title: "")
      let titleV = titleView()
      item.titleView = titleV
  
      item.hidesBackButton = true
      item.setHidesBackButton(false, animated: false)
  
      item.leftBarButtonItem = UIBarButtonItem(image: UIImage.fontAwesomeIcon(name: .userCircle, textColor: ColorConstants.baseColor, size: CGSize(width: 40, height: 40)), style: .plain, target: nil, action: nil)
      item.leftBarButtonItem?.tintColor = .white
      item.leftBarButtonItem?.action = #selector(moveToProfileScreen)
      self.pushItem(item, animated: false)
  }
  </code></pre>
  
  <p>I just want to be able to see my custom nav bar from the beginning, and not have to click an empty back button to see the nav bar. Thanks!</p>