disable torch for sample

Author: navaronbracke

example/lib/barcode_scanner_controller.dart

@@ -18,7 +18,6 @@ class _BarcodeScannerWithControllerState
     extends State<BarcodeScannerWithController> with WidgetsBindingObserver {
   final MobileScannerController controller = MobileScannerController(
     autoStart: false,
-    torchEnabled: true,
   );
 
   @override