Borra reimplementacion de funciones de searchbar

ContactsApp/ContactsViewController.swift

@@ -21,6 +21,7 @@ class ContactsViewController: UIViewController {
         super.viewDidLoad()
         contactsTable.register(UINib(nibName: "ContactSection", bundle: nil), forHeaderFooterViewReuseIdentifier: "headerId")
         importContacts()
+        searchBar.delegate = self
         contactsTable.tableFooterView = UIView(frame: .zero)
         searchBar.placeholder = NSLocalizedString("Nombre...", comment: "")
     }
@@ -151,15 +152,6 @@ extension ContactsViewController: UISearchBarDelegate, UISearchDisplayDelegate,
         
     }
     
-    func searchBarTextDidEndEditing(_ searchBar: UISearchBar) {
-        self.searchBar.showsCancelButton = false
-    }
-    
-    func searchBarTextDidBeginEditing(_ searchBar: UISearchBar) {
-        self.searchBar.showsCancelButton = true
-        self.searchBar.resignFirstResponder()
-    }
-
     func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
         print(searchText)
     }