Remove unused reference links.

Author: robinsh

articles/iot-hub/quickstart-send-telemetry-ios.md

@@ -137,9 +137,3 @@ To learn how to control your simulated device from a back-end application, conti
 
 > [!div class="nextstepaction"]
 > [Quickstart: Control a device connected to an IoT hub](quickstart-control-device-node.md)
-
-<!-- Links -->
-[lnk-process-d2c-tutorial]: tutorial-routing.md
-[lnk-device-management]: iot-hub-node-node-device-management-get-started.md
-[lnk-iot-edge]: ../iot-edge/tutorial-simulate-device-linux.md
-[lnk-connect-device]: https://azure.microsoft.com/develop/iot/