chore: move examples to separate repository

examples/flutter/quickstart/ios/Runner/AppDelegate.swift

@@ -1,13 +0,0 @@
-import Flutter
-import UIKit
-
-@main
-@objc class AppDelegate: FlutterAppDelegate {
-  override func application(
-    _ application: UIApplication,
-    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
-  ) -> Bool {
-    GeneratedPluginRegistrant.register(with: self)
-    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
-  }
-}