2020-12-21 1.IOS去掉bugly。2.修复EixtAccount没断开mqtt问题

JLChen

2020-12-21 67536549b8a07077799f0224af7a39d13c9d3e0d

 HDL-ON_iOS/Scan.cs

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

                    scanner?.Cancel();
                };