Change back the behavior of the output device selector to the old way

Although the new way was discussed with our UXers, we got a number of reports that it was confusing.
I also accidentally started a print while using it

resources/qml/ActionPanel/OutputDevicesActionButton.qml

@@ -93,7 +93,6 @@ Item
                         onClicked:
                         {
                             UM.OutputDeviceManager.setActiveDevice(model.id)
-                            widget.requestWriteToDevice()
                             popup.close()
                         }
                     }