ditch 300 baud RTTY, don't want to waste power on it

firmware/src/sequencer.c

@@ -70,9 +70,6 @@ void telemetry_sequence(struct tracker_datapoint* dp, uint32_t n)
     /* Contestia */
     contestia_telemetry(dp);
 
-    /* 300 baud rtty */
-    rtty_telemetry(dp);
-
 #if TELEMETRY_USE_GEOFENCE
   }
 #endif