Remove useless clone

Author: ValerianRey

src/torchjd/autogram/_engine.py

@@ -176,7 +176,7 @@ def differentiation(_grad_output: Tensor) -> tuple[Tensor, ...]:
 
             output_dims = list(range(output.ndim))
             identity = torch.eye(output.ndim, dtype=torch.int64)
-            strides = torch.concatenate([identity, identity.clone()], dim=0)
+            strides = torch.concatenate([identity, identity], dim=0)
             jac_output = make_sst(torch.ones_like(output), strides)
 
             vmapped_diff = differentiation