No need to show MQTT password anymore

ampel-firmware/mqtt.cpp

@@ -119,10 +119,6 @@ namespace mqtt {
     Serial.print(F(") "));
     Serial.print(F("User:'"));
     Serial.print(config::mqtt_user);
-    Serial.print(F("' Password:'"));
-    for (size_t i = 0; i < strlen(config::mqtt_password); ++i) {
-      Serial.print("*");
-    }
     Serial.print(F("' ..."));
 
     led_effects::onBoardLEDOn();