Fixed hibernate/powerOff for ESP32 boards to stay at uA

variants/thinknode_m2/ThinknodeM2Board.h

@@ -3,15 +3,11 @@
 #include <Arduino.h>
 #include <helpers/RefCountedDigitalPin.h>
 #include <helpers/ESP32Board.h>
-#include <driver/rtc_io.h>
 
 class ThinknodeM2Board : public ESP32Board {
 
 public:
-
   void begin();
-  void enterDeepSleep(uint32_t secs, int pin_wake_btn = -1);
-  void powerOff() override;
   uint16_t getBattMilliVolts() override;
   const char* getManufacturerName() const override ;