性能优化：无状态功能开关点击反馈

wei

2021-07-05 098c053cb132a432f4e3c342d26a3d71621c10dd

 HDL-ON_iOS/Scan.cs

@@ -35,7 +35,6 @@
                var bOn = false;
                mZXingOverlayView.OnCancel += () =>
                {

                    scanner?.Cancel();
                };