Revert "Check if MQTT remote IP is private (#5627)" (#5636)

This reverts commit 9a10907a2d.

src/mqtt/MQTT.cpp

@@ -444,9 +444,6 @@ void MQTT::reconnect()
             enabled = true; // Start running background process again
             runASAP = true;
             reconnectCount = 0;
-#if !defined(ARCH_PORTDUINO)
-            isMqttServerAddressPrivate = isPrivateIpAddress(mqttClient.remoteIP());
-#endif
 
             publishNodeInfo();
             sendSubscriptions();