Removes dropdown selector for refresh cycle. Changes refresh to 20 seconds.

lib/live_info_business_object.dart

@@ -10,7 +10,7 @@ class LiveInfoBusinessObject extends ChangeNotifier {
       'KRYZ_LIVE_INFO_URL',
       defaultValue: 'http://kryz.airtime.pro/api/live-info',
     ),
-    int refreshIntervalSeconds = 15,
+    int refreshIntervalSeconds = 20,
     this.requestTimeout = const Duration(seconds: 8),
   }) : _refreshIntervalSeconds = refreshIntervalSeconds;