Update app_4k.py

app_4k.py

@@ -209,7 +209,7 @@ def load_model_from_path(model_path: str):
 def get_duration(prompt, height, width, 
                    negative_prompt, duration_seconds,
                    guidance_scale, steps,
-                   seed, randomize_seed, use_ultrawan_4k,
+                   seed, randomize_seed,
                    progress):
     if steps > 4 and duration_seconds > 2:
         return 90