SITL: removed Morse position offset

this allows for creating swarms of vehicles with different start
locations

libraries/SITL/SIM_Morse.cpp

@@ -431,7 +431,6 @@ void Morse::update(const struct sitl_input &input)
         // cope with restarting while connected
         initial_time_s = time_now_us * 1.0e-6f;
         last_time_s = state.timestamp;
-        position_offset.zero();
         return;
     }
 
@@ -490,12 +489,6 @@ void Morse::update(const struct sitl_input &input)
     scanner.points = state.scanner.points;
     scanner.ranges = state.scanner.ranges;
 
-    // offset based on first position to account for offset in morse world
-    if (position_offset.is_zero()) {
-        position_offset = position;
-    }
-    position -= position_offset;
-
     update_position();
     time_advance();
     uint64_t new_time_us = (state.timestamp - initial_time_s)*1.0e6;

libraries/SITL/SIM_Morse.h

@@ -76,8 +76,6 @@ private:
     double extrapolated_s;
     double average_frame_time_s;
 
-    Vector3f position_offset;
-
     uint64_t socket_frame_counter;
     uint64_t last_socket_frame_counter;
     uint64_t frame_counter;