[SYS] Add global task watchdog timer (#1724)

main/config_RN8209.h

@@ -47,9 +47,6 @@ extern void RN8209toMQTT();
 #  define TimeBetweenReadingRN8209 500 // time between 2 RN8209 readings in ms
 #endif
 
-#ifndef TimeOutWDTRN8209
-#  define TimeOutWDTRN8209 5 // time out if RN8209 task is stuck in seconds (should be more than TimeBetweenReadingRN8209/1000), the WDT will reset the ESP
-#endif
 #ifndef TimeBetweenPublishingRN8209
 #  define TimeBetweenPublishingRN8209 60000 // time between 2 RN8209 publishing in ms
 #endif