A follow-up cleanup on #57.

thunder/executors/cudnnex.py

@@ -334,25 +334,7 @@ def _cudnn_sdpa_checker(
         if d % 8 != 0 or d > 128:
             return False
 
-    is_backward_supported = _cudnn_sdpa_backward_checker(
-        query, key, value, attn_mask, dropout_p, is_causal, scale=scale
-    )
-
-    return True and is_backward_supported
-
-
-@langctx("torch")
-def _cudnn_sdpa_backward_checker(
-    query: TensorLike,
-    key: TensorLike,
-    value: TensorLike,
-    attn_mask: TensorLike | None = None,
-    dropout_p: float = 0.0,
-    is_causal: bool = False,
-    *,
-    scale: float | None = None,
-) -> bool:
-    return cudnn is not None
+    return True
 
 
 cudnn_sdpa_fwd = cudnn_ex.register_operator(