Removed AppDelegate change and unused background image

Author: Cavallando

Example/CommandBarIOS/AppDelegate.swift

@@ -30,10 +30,5 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
     func applicationWillTerminate(_ application: UIApplication) {
         // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
     }
-
-    
-    func application(_ app: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any] = [:]) -> Bool {
-        return true
-    }
 }