Convert formatting to use ruff instead of yapf + isort (#26247)

Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>

tests/kernels/quantization/test_hadacore.py

@@ -15,7 +15,8 @@ from vllm import _custom_ops as ops
 def test_hadacore(batch_size, hidden_dim, dtype=torch.bfloat16, device="cuda"):
     x = torch.eye(hidden_dim, dtype=dtype, device=device)
     hadamard = deterministic_hadamard_matrix(
-        hidden_dim, dtype=torch.float64, device="cuda") / math.sqrt(hidden_dim)
+        hidden_dim, dtype=torch.float64, device="cuda"
+    ) / math.sqrt(hidden_dim)
 
     y = ops.hadacore_transform(x.clone())
     y_true = (x.to(hadamard.dtype) @ hadamard.T).to(y.dtype)