GCS_MAVLink: remove some unused includes

libraries/GCS_MAVLink/GCS_MAVLink.cpp

@@ -23,7 +23,6 @@ This provides some support code and variables for MAVLink enabled sketches
 #include "GCS_MAVLink.h"
 
 #include <AP_Common/AP_Common.h>
-#include <AP_GPS/AP_GPS.h>
 #include <AP_HAL/AP_HAL.h>
 
 extern const AP_HAL::HAL& hal;

libraries/GCS_MAVLink/GCS_Param.cpp

@@ -14,10 +14,8 @@
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-#include <AP_AHRS/AP_AHRS.h>
 #include <AP_HAL/AP_HAL.h>
 
-#include "AP_Common/AP_FWVersion.h"
 #include "GCS.h"
 #include <AP_Logger/AP_Logger.h>
 

libraries/GCS_MAVLink/GCS_serial_control.cpp

@@ -20,7 +20,6 @@
 
 #include <AP_HAL/AP_HAL.h>
 #include "GCS.h"
-#include <AP_Logger/AP_Logger.h>
 #include <AP_GPS/AP_GPS.h>
 
 extern const AP_HAL::HAL& hal;