autotest: removed delta_time from update_position()

not available in some backends, and not needed

Tools/autotest/pysim/aircraft.py

@@ -36,7 +36,7 @@ class Aircraft(object):
             position = self.position
         return (-position.z) + self.home_altitude <= self.ground_level + self.frame_height
 
-    def update_position(self, delta_time):
+    def update_position(self):
         '''update lat/lon/alt from position'''
 
         bearing = math.degrees(math.atan2(self.position.y, self.position.x))

Tools/autotest/pysim/helicopter.py

@@ -108,4 +108,4 @@ class HeliCopter(Aircraft):
                                     -(self.ground_level + self.frame_height - self.home_altitude))
 
         # update lat/lon/altitude
-        self.update_position(delta_time)
+        self.update_position()

Tools/autotest/pysim/multicopter.py

@@ -188,4 +188,4 @@ class MultiCopter(Aircraft):
                                     -(self.ground_level + self.frame_height - self.home_altitude))
 
         # update lat/lon/altitude
-        self.update_position(delta_time)
+        self.update_position()

Tools/autotest/pysim/rover.py

@@ -138,7 +138,7 @@ class Rover(Aircraft):
         self.position += self.velocity * delta_time
 
         # update lat/lon/altitude
-        self.update_position(delta_time)
+        self.update_position()
 
 if __name__ == "__main__":
     r = Rover()

Tools/autotest/pysim/tracker.py

@@ -143,4 +143,4 @@ class Tracker(Aircraft):
 
         # new velocity vector
         self.velocity = Vector3()
-        self.update_position(delta_time)
+        self.update_position()