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

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

tests/benchmarks/test_latency_cli.py

@@ -10,8 +10,18 @@ MODEL_NAME = "meta-llama/Llama-3.2-1B-Instruct"
 @pytest.mark.benchmark
 def test_bench_latency():
     command = [
-        "vllm", "bench", "latency", "--model", MODEL_NAME, "--input-len", "32",
-        "--output-len", "1", "--enforce-eager", "--load-format", "dummy"
+        "vllm",
+        "bench",
+        "latency",
+        "--model",
+        MODEL_NAME,
+        "--input-len",
+        "32",
+        "--output-len",
+        "1",
+        "--enforce-eager",
+        "--load-format",
+        "dummy",
     ]
     result = subprocess.run(command, capture_output=True, text=True)
     print(result.stdout)