diff --git a/src/refiners/fluxion/utils.py b/src/refiners/fluxion/utils.py
index 2b4fcc9..b0d83c5 100644
--- a/src/refiners/fluxion/utils.py
+++ b/src/refiners/fluxion/utils.py
@@ -1,4 +1,4 @@
-from typing import Dict, Iterable, Literal, TypeVar
+from typing import Iterable, Literal, TypeVar
 from PIL import Image
 from numpy import array, float32
 from pathlib import Path
@@ -34,10 +34,6 @@ def interpolate(x: Tensor, factor: float | torch.Size, mode: str = "nearest") ->
     )  # type: ignore
 
 
-def bidirectional_mapping(mapping: Dict[str, str]) -> Dict[str, str]:
-    return {**mapping, **{value: key for key, value in mapping.items()}}
-
-
 def image_to_tensor(image: Image.Image, device: Device | str | None = None, dtype: DType | None = None) -> Tensor:
     return torch.tensor(array(image).astype(float32).transpose(2, 0, 1) / 255.0, device=device, dtype=dtype).unsqueeze(
         0