qml: don't explicitly add new channel to listmodel. It is updated automatically (and the

model refreshed) through the channels_updated callback

electrum/gui/qml/components/OpenChannelDialog.qml

@@ -236,7 +236,6 @@ ElDialog {
                 app.channelOpenProgressDialog.channelBackup = channelopener.channelBackup(cid)
             }
             // TODO: handle incomplete TX
-            channelopener.wallet.channelModel.new_channel(cid)
             root.close()
         }
     }