Update README.md

Author: imdhemy

README.md

@@ -54,8 +54,6 @@ return [
 
     'google_play_package_name' => env('GOOGLE_PLAY_PACKAGE_NAME', 'com.example.name'),
 
-    'appstore_sandbox' => env('APPSTORE_SANDBOX', true),
-
     'appstore_password' => env('APPSTORE_PASSWORD', ''),
 
     'eventListeners' => [