Plane: removed incorrect comment

ArduPlane/quadplane.cpp

@@ -783,8 +783,6 @@ void QuadPlane::check_yaw_reset(void)
     float yaw_angle_change_rad = 0.0f;
     uint32_t new_ekfYawReset_ms = ahrs.getLastYawResetAngle(yaw_angle_change_rad);
     if (new_ekfYawReset_ms != ekfYawReset_ms) {
-        // we only reset if the EKF yaw reset happened since the last
-        // mode change. This prevents a past reset from before 
         attitude_control->shift_ef_yaw_target(degrees(yaw_angle_change_rad) * 100);
         ekfYawReset_ms = new_ekfYawReset_ms;
         GCS_MAVLINK::send_statustext_all(MAV_SEVERITY_INFO, "EKF yaw reset %.2f", degrees(yaw_angle_change_rad));