[AFSK] Reworked macro configuration system

src/protocols/AFSK/AFSK.cpp

@@ -1,5 +1,5 @@
 #include "AFSK.h"
-#if !defined(RADIOLIB_EXCLUDE_AFSK)
+#if !RADIOLIB_EXCLUDE_AFSK
 
 AFSKClient::AFSKClient(PhysicalLayer* phy, uint32_t pin): outPin(pin) {
   phyLayer = phy;

src/protocols/AFSK/AFSK.h

@@ -3,7 +3,7 @@
 
 #include "../../TypeDef.h"
 
-#if !defined(RADIOLIB_EXCLUDE_AFSK)
+#if !RADIOLIB_EXCLUDE_AFSK
 
 #include "../../Module.h"
 
@@ -49,7 +49,7 @@ class AFSKClient  {
     */
     int16_t noTone(bool keepOn = false);
 
-#if !defined(RADIOLIB_GODMODE)
+#if !RADIOLIB_GODMODE
   private:
 #endif
     PhysicalLayer* phyLayer;