Standardize serial monitor baud rate in AFSK Packet Tester example

examples/AFSK_PacketTester/AFSK_PacketTester.ino

@@ -45,7 +45,7 @@ void setup() {
   // turn on pwr to the radio
   digitalWrite(RESET_PIN, HIGH);
   
-  Serial.begin(115200);
+  Serial.begin(9600);
   
   radio.initialize();
   radio.frequency(144390);

src/HamShield.h

@@ -22,8 +22,6 @@
 #define HAMSHIELD_PWM_PIN                 3    // Pin assignment for PWM output
 #define HAMSHIELD_EMPTY_CHANNEL_RSSI   -110    // Default threshold where channel is considered "clear"
 
-#define HAMSHIELD_AFSK_RX_FIFO_LEN 16
-
 // button modes
 #define PTT_MODE 1
 #define RESET_MODE 2