remove model preloading initialization from main execution

app.py

@@ -496,10 +496,6 @@ def create_interface():
     return demo
 
 if __name__ == "__main__":
-    # Initialize models if PRELOAD_MODELS is True
-    if PRELOAD_MODELS:
-        success, status = preload_models()
-        print(status)
         
     trellis = get_trellis_pipeline()
     trellis.cuda()