Update app.py

app.py

@@ -70,11 +70,8 @@ text_encoder.requires_grad_(False)
 unet.requires_grad_(False)
 controlnet.requires_grad_(False)
 
-if is_xformers_available():
-    unet.enable_xformers_memory_efficient_attention()
-    controlnet.enable_xformers_memory_efficient_attention()
-else:
-    raise ValueError("xformers is not available. Make sure it is installed correctly")
+unet.enable_xformers_memory_efficient_attention()
+controlnet.enable_xformers_memory_efficient_attention()
 
 # Get the validation pipeline
 validation_pipeline = StableDiffusionControlNetPipeline(