remove serial debug statements

Author: Owen L - SFE

zzz_temporary-ble-build-out/zzz_temporary-ble-build-out.ino

@@ -397,10 +397,6 @@ extern "C" void am_ble_isr(void){
 void setup() {
   // put your setup code here, to run once:
 
-  Serial.begin(115200);
-  delay(1000);
-  Serial.printf("Hello!");
-
   //
   // Boot the radio.
   //