Tracker: eliminate gcs_send_message wraper

AntennaTracker/AntennaTracker.cpp

@@ -85,7 +85,7 @@ void Tracker::dataflash_periodic(void)
 void Tracker::one_second_loop()
 {
     // send a heartbeat
-    gcs_send_message(MSG_HEARTBEAT);
+    gcs().send_message(MSG_HEARTBEAT);
 
     // make it possible to change orientation at runtime
     ahrs.set_orientation();

AntennaTracker/GCS_Mavlink.cpp

@@ -857,8 +857,8 @@ void Tracker::mavlink_delay_cb()
     uint32_t tnow = AP_HAL::millis();
     if (tnow - last_1hz > 1000) {
         last_1hz = tnow;
-        gcs_send_message(MSG_HEARTBEAT);
-        gcs_send_message(MSG_EXTENDED_STATUS1);
+        gcs().send_message(MSG_HEARTBEAT);
+        gcs().send_message(MSG_EXTENDED_STATUS1);
     }
     if (tnow - last_50hz > 20) {
         last_50hz = tnow;
@@ -874,14 +874,6 @@ void Tracker::mavlink_delay_cb()
     tracker.in_mavlink_delay = false;
 }
 
-/*
- *  send a message on both GCS links
- */
-void Tracker::gcs_send_message(enum ap_message id)
-{
-    gcs().send_message(id);
-}
-
 /*
  *  send data streams in the given rate range on both links
  */
@@ -903,6 +895,6 @@ void Tracker::gcs_update(void)
  */
 void Tracker::gcs_retry_deferred(void)
 {
-    gcs_send_message(MSG_RETRY_DEFERRED);
+    gcs().send_message(MSG_RETRY_DEFERRED);
     gcs().service_statustext();
 }

AntennaTracker/Tracker.h

@@ -204,7 +204,6 @@ private:
     void send_nav_controller_output(mavlink_channel_t chan);
     void send_simstate(mavlink_channel_t chan);
     void mavlink_check_target(const mavlink_message_t* msg);
-    void gcs_send_message(enum ap_message id);
     void gcs_data_stream_send(void);
     void gcs_update(void);
     void gcs_retry_deferred(void);