simplified

python/damask/_vtk.py

@@ -347,7 +347,6 @@ class VTK:
 
         See http://compilatrix.com/article/vtk-1 for further ideas.
         """
-        def screen_size():
         try:
             import wx
             _ = wx.App(False)                                                                       # noqa
@@ -363,7 +362,6 @@ class VTK:
                 width  = 1024
                 height =  768
 
-            return (width,height)
         mapper = vtk.vtkDataSetMapper()
         mapper.SetInputData(self.vtk_data)
         actor = vtk.vtkActor()
@@ -377,7 +375,7 @@ class VTK:
         ren.AddActor(actor)
         ren.SetBackground(0.2,0.2,0.2)
 
-        window.SetSize(screen_size[0],screen_size[1])
+        window.SetSize(width,height)
 
         iren = vtk.vtkRenderWindowInteractor()
         iren.SetRenderWindow(window)