Revert batching mask

app.py

@@ -131,7 +131,7 @@ def infer(
     results_images = pipe(
         prompt=[prompt] * batch_size,
         image=[image] * batch_size,
-        mask_image=[mask] * batch_size,
+        mask_image=mask,
         height=FIXED_DIMENSION,
         width=FIXED_DIMENSION * 2,
         guidance_scale=guidance_scale,