More variant.h cleanup. LED_NOTIFICATION, remove dead code, etc (#9477)

variants/nrf52840/monteops_hw1/variant.cpp

@@ -35,7 +35,4 @@ void initVariant()
     // LED1 & LED2
     pinMode(PIN_LED1, OUTPUT);
     ledOff(PIN_LED1);
-
-    pinMode(PIN_LED2, OUTPUT);
-    ledOff(PIN_LED2);
 }

variants/nrf52840/monteops_hw1/variant.h

@@ -50,10 +50,10 @@ extern "C" {
 
 // LEDs
 #define PIN_LED1 (35)
-#define PIN_LED2 (36) // Connected to WWAN host LED (if present)
+#define LED_BLUE (36) // Connected to WWAN host LED (if present)
 
 #define LED_GREEN PIN_LED1
-#define LED_BLUE PIN_LED2
+#define LED_NOTIFICATION LED_BLUE
 
 #define LED_STATE_ON 1 // State when LED is litted