Rover: GCS_MAVLink uses compass singleton, stop implementing get_compass

APMrover2/GCS_Mavlink.cpp

@@ -1295,11 +1295,6 @@ AP_VisualOdom *GCS_MAVLINK_Rover::get_visual_odom() const
 #endif
 }
 
-Compass *GCS_MAVLINK_Rover::get_compass() const
-{
-    return &rover.compass;
-}
-
 AP_Mission *GCS_MAVLINK_Rover::get_mission()
 {
     return &rover.mission;

APMrover2/GCS_Mavlink.h

@@ -14,7 +14,6 @@ protected:
     uint32_t telem_delay() const override;
     bool accept_packet(const mavlink_status_t &status, mavlink_message_t &msg) override;
 
-    Compass *get_compass() const override;
     AP_Mission *get_mission() override;
     AP_Rally *get_rally() const override;
     AP_Camera *get_camera() const override;