improved bus wait with raii class that updates last access

src/remoteIO.h

@@ -4,6 +4,7 @@
 
 #include <DebugLog.h>
 #include <RS485_Driver.h>
+#include <utils.h>
 
 class remoteIO
 {
@@ -44,9 +45,6 @@ public:
 
     void resetAll(const bool value);
 
-private:
-    void delayRequest();
-
 private:
     bool m_initialized;
     drivers::MODBUS &m_bus;