REFAC: Move endSimualtion to destructor

Source/SimulationManager/VTKRenderer/imstkVTKInteractorStyle.cpp

@@ -186,7 +186,7 @@ VTKInteractorStyle::OnChar()
              (key == 'q' || key == 'Q' || key == 'e' || key == 'E')) // end Simulation
     {
         m_fpsActor->VisibilityOff();
-        m_simManager->endSimulation();
+        //m_simManager->endSimulation();
     }
     else if (key == 'd' || key == 'D')  // switch rendering mode
     {

Source/SimulationManager/imstkSimulationManager.h

@@ -59,7 +59,7 @@ public:
     ///
     /// \brief Default destructor
     ///
-    ~SimulationManager() = default;
+    ~SimulationManager() { this->endSimulation(); };
 
     ///
     /// \brief Returns the simulation status