Resolve "Inconsistency in AgentAdapter::Get/SetYawAcceleration()"

Closes #135 (closed)

sim/src/core/opSimulation/modules/World_OSI/AgentAdapter.h

@@ -433,7 +433,7 @@ public:
 
     double GetYawAcceleration() const override
     {
-        return yawAcceleration;
+        return GetBaseTrafficObject().GetAbsOrientationAcceleration().yawAcceleration;
     }
 
     double GetCentripetalAcceleration() const override
@@ -674,7 +674,6 @@ private:
     double steeringWheelAngle = 0.0;
     double centripetalAcceleration = 0.0;
     double tangentialAcceleration = 0.0;
-    double yawAcceleration = 0.0;
     double engineSpeed = 0.;
     double distanceTraveled = 0.0;
     double previousVelocity = 0.0;