Remove all references to yapf as it's no longer used (#26251)

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

tests/v1/logits_processors/test_custom_online.py

@@ -11,8 +11,6 @@ import pytest
 import pytest_asyncio
 
 from tests.utils import RemoteOpenAIServerCustom, create_new_process_for_each_test
-
-# yapf: disable
 from tests.v1.logits_processors.utils import (
     DUMMY_LOGITPROC_ARG,
     DUMMY_LOGITPROC_FQCN,
@@ -25,8 +23,6 @@ from tests.v1.logits_processors.utils import (
 )
 from tests.v1.logits_processors.utils import entry_points as fake_entry_points
 
-# yapf: enable
-
 
 def _server_with_logitproc_entrypoint(
     env_dict: Optional[dict[str, str]],