cleanup unused code

Firmware/radio/packet.c

@@ -102,19 +102,7 @@ uint8_t mavlink_frame(uint8_t max_xmit, __xdata uint8_t * __pdata buf)
 {
 	__data uint16_t slen;
 
-	//
-	// There is already a packet sitting waiting here
-	//
-	// but this optimization is redundant with the loop below.  By letting the very slightly
-	// more expensive version its thing we can ensure we skip _all_ redundant rc_override msgs
-#if 0
-	serial_read_buf(last_sent, mav_pkt_len);
-	last_sent_len = mav_pkt_len;
-	memcpy(buf, last_sent, last_sent_len);
-	check_heartbeat(buf);
-#else
 	last_sent_len = 0;
-#endif
 	mav_pkt_len = 0;
 
 	slen = serial_read_available();