fix Gradio 6 launch argument regression

Remove the unsupported show_api launch argument so the Space can boot on the upgraded Gradio runtime while keeping the named predict API endpoint in place.

Made-with: Cursor

app.py

@@ -400,4 +400,4 @@ with gr.Blocks(title="Orient-Anything-V2 Demo") as demo:
         queue=False,
     )
 
-demo.launch(show_api=False)
+demo.launch()