Fix ESP8266LLMNR for build with lwip2 (#3821)
Fix ESP8266LLMNR for build with lwip2 (#3821)

* Fix for build with lwip2

* Fix for lwip2: Removed unnecessary #ifdefs

* Remove duplicate define for BIT

lrmoreno007/Arduino,hallard/Arduino,Lan-Hekary/Arduino,sticilface/Arduino,Juppit/Arduino,hallard/Arduino,Adam5Wu/Arduino,esp8266/Arduino,lrmoreno007/Arduino,Juppit/Arduino,sticilface/Arduino,lrmoreno007/Arduino,esp8266/Arduino,sticilface/Arduino,hallard/Arduino,Lan-Hekary/Arduino,lrmoreno007/Arduino,wemos/Arduino,wemos/Arduino,wemos/Arduino,hallard/Arduino,esp8266/Arduino,wemos/Arduino,Juppit/Arduino,Lan-Hekary/Arduino,Adam5Wu/Arduino,wemos/Arduino,hallard/Arduino,Adam5Wu/Arduino,sticilface/Arduino,sticilface/Arduino,esp8266/Arduino,Juppit/Arduino,Lan-Hekary/Arduino,esp8266/Arduino,Adam5Wu/Arduino,Juppit/Arduino,Lan-Hekary/Arduino,Adam5Wu/Arduino,lrmoreno007/Arduino