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_collective_rpc.py

@@ -23,9 +23,11 @@ def test_collective_rpc(tp_size, backend, monkeypatch):
         return self.rank
 
     monkeypatch.setenv("VLLM_ALLOW_INSECURE_SERIALIZATION", "1")
-    llm = LLM(model="meta-llama/Llama-3.2-1B-Instruct",
-              enforce_eager=True,
-              load_format="dummy",
-              tensor_parallel_size=tp_size,
-              distributed_executor_backend=backend)
+    llm = LLM(
+        model="meta-llama/Llama-3.2-1B-Instruct",
+        enforce_eager=True,
+        load_format="dummy",
+        tensor_parallel_size=tp_size,
+        distributed_executor_backend=backend,
+    )
     assert llm.collective_rpc(echo_rank) == list(range(tp_size))