esp-now remote: reduce number of exported functions

too many global variables and functions ... this makes stuff 'static' that can remain at file scope

wled00/wled.cpp

@@ -54,7 +54,9 @@ void WLED::loop()
   handleIR();        // 2nd call to function needed for ESP32 to return valid results -- should be good for ESP8266, too
   #endif
   handleConnection();
+  #ifndef WLED_DISABLE_ESPNOW
   handleRemote();
+  #endif
   handleSerial();
   handleImprovWifiScan();
   handleNotifications();