Modernising the code

src/Cxx/Parallel/ExodusIIWriter.cxx

-#include <vtkSmartPointer.h>
-#include <vtkPolyData.h>
 #include <vtkExodusIIWriter.h>
+#include <vtkNew.h>
+#include <vtkPolyData.h>
 #include <vtkTimeSourceExample.h>
- 
+
 int main(int, char *[])
 {
-             
-  vtkSmartPointer<vtkTimeSourceExample> timeSource = 
-    vtkSmartPointer<vtkTimeSourceExample>::New();
-               
-  vtkSmartPointer<vtkExodusIIWriter> exodusWriter = 
-    vtkSmartPointer<vtkExodusIIWriter>::New();
+   vtkNew<vtkTimeSourceExample> timeSource;
+
+  vtkNew<vtkExodusIIWriter> exodusWriter;
   exodusWriter->SetFileName("output.exii");
   exodusWriter->SetInputConnection (timeSource->GetOutputPort());
   exodusWriter->WriteAllTimeStepsOn ();
   exodusWriter->Write();
-                       
+
   return EXIT_SUCCESS;
 }