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

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

tests/entrypoints/llm/test_gpu_utilization.py

@@ -16,9 +16,8 @@ def test_gpu_memory_utilization():
     # makes sure gpu_memory_utilization is per-instance limit,
     # not a global limit
     llms = [
-        LLM(model="facebook/opt-125m",
-            gpu_memory_utilization=0.3,
-            enforce_eager=True) for i in range(3)
+        LLM(model="facebook/opt-125m", gpu_memory_utilization=0.3, enforce_eager=True)
+        for i in range(3)
     ]
     for llm in llms:
         outputs = llm.generate(prompts, sampling_params)