major refactor: remove backend original

Signed-off-by: Vladimir Mandic <mandic00@live.com>

scripts/example.py

@@ -67,9 +67,7 @@ class Script(scripts_manager.Script):
         return title
 
     def show(self, is_img2img):
-        if shared.native:
-            return img2img if is_img2img else txt2img
-        return False
+        return img2img if is_img2img else txt2img
 
     # Define UI for pipeline
     def ui(self, _is_img2img):