Resolve incorrect wiring instructions (#984)

As identified in this forum post (
https://community.openmqttgateway.com/t/rtl-433-esp32-bme280-but-what-ra
dio/1563) , the default builds have incorrect connections for the
RTL_433 module.  This fixes the default build configuration and
crispness the documentation.

Co-authored-by: Northern Man <sgracey@Heisenberg.local>

platformio.ini

@@ -561,8 +561,6 @@ build_flags =
   '-DZradioCC1101="CC1101"'
   '-DZgatewayRTL_433="rtl_433"'
   '-DGateway_Name="OpenMQTTGateway_rtl_433_ESP"'
-  '-DRF_RECEIVER_GPIO=4'  ; CC1101 - GDO2
-  '-DRF_EMITTER_GPIO=2'   ; CC1101 - GDO0
   '-DvalueAsASubject=true'    ; mqtt topic includes model and device
 ;  '-DPUBLISH_UNPARSED=true'  ; Publish details of undecoded signals 
 ;  '-DRTL_DEBUG=4'            ; enable rtl_433 verbose device decode
@@ -586,8 +584,6 @@ build_flags =
   '-DZgatewayPilight="Pilight"'
   '-DZradioCC1101="CC1101"'
   '-DGateway_Name="OpenMQTTGateway_multi_receiver"'
-  '-DRF_RECEIVER_GPIO=4'  ; CC1101 - GDO2
-  '-DRF_EMITTER_GPIO=2'   ; CC1101 - GDO0
   '-DvalueAsASubject=true'  ; mqtt topic includes model and device (rtl_433) or protocol and id ( RF and PiLight )
 ;  '-DDEFAULT_RECEIVER=1'  ; Default receiver to enable on startup