fix load model

app.py

@@ -27,8 +27,7 @@ def load_model(model_id):
     
     if model_id != last_loaded_model:
         pipe = None
-        torch_gc()        
-       
+              
         pipe = StableDiffusionXLControlNetTileSRPipeline.from_pretrained(
             model_id, controlnet=controlnet, vae=vae, torch_dtype=torch.float16, use_safetensors=True, variant="fp16"
         ).to(device)