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

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

tests/quantization/test_ipex_quant.py

@@ -1,11 +1,11 @@
 # SPDX-License-Identifier: Apache-2.0
 # SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Test model set-up and inference for quantized HF models supported
- on the CPU/GPU backend using IPEX (including AWQ/GPTQ).
- 
- Validating the configuration and printing results for manual checking.
+on the CPU/GPU backend using IPEX (including AWQ/GPTQ).
 
- Run `pytest tests/quantization/test_ipex_quant.py`.
+Validating the configuration and printing results for manual checking.
+
+Run `pytest tests/quantization/test_ipex_quant.py`.
 """
 
 import pytest
@@ -19,14 +19,14 @@ MODELS = [
 DTYPE = ["bfloat16"]
 
 
-@pytest.mark.skipif(not current_platform.is_cpu()
-                    and not current_platform.is_xpu(),
-                    reason="only supports Intel CPU/XPU backend.")
+@pytest.mark.skipif(
+    not current_platform.is_cpu() and not current_platform.is_xpu(),
+    reason="only supports Intel CPU/XPU backend.",
+)
 @pytest.mark.parametrize("model", MODELS)
 @pytest.mark.parametrize("dtype", DTYPE)
 def test_ipex_quant(vllm_runner, model, dtype):
     with vllm_runner(model, dtype=dtype) as llm:
-        output = llm.generate_greedy(["The capital of France is"],
-                                     max_tokens=32)
+        output = llm.generate_greedy(["The capital of France is"], max_tokens=32)
     assert output
     print(output)