Cleanup: remove redundant preferences.inputs.use_ndof

This is available via: bpy.app.build_options.input_ndof

scripts/startup/bl_ui/space_userpref.py

@@ -1812,9 +1812,7 @@ class USERPREF_PT_input_ndof(InputPanel, CenterAlignMixIn, Panel):
 
     @classmethod
     def poll(cls, context):
-        prefs = context.preferences
-        inputs = prefs.inputs
-        return inputs.use_ndof
+        return bpy.app.build_options.input_ndof
 
     def draw_centered(self, context, layout):
         prefs = context.preferences