Reverted a lot of cruft

gauge.py

@@ -25,6 +25,7 @@ import network
 import utime
 import ujson
 import gc
+from umqtt.robust import MQTTClient
 from machine import UART
 
 # ---------------------------------------------------------------------------
@@ -937,7 +938,6 @@ def check_mqtt():
         _mqtt_connected = False
 
     log_err("Attempting MQTT reconnection...")
-    from umqtt.robust import MQTTClient
     for attempt in range(3):
         try:
             client_ref = MQTTClient(