[Chore] Move tokenizer initialization methods (#29793)

Signed-off-by: DarkLight1337 <tlleungac@connect.ust.hk>

tests/models/utils.py

@@ -13,7 +13,7 @@ from transformers import PretrainedConfig
 from vllm.config.model import ModelConfig, ModelDType, RunnerOption
 from vllm.logprobs import Logprob, PromptLogprobs, SampleLogprobs
 from vllm.multimodal.processing import InputProcessingContext
-from vllm.transformers_utils.tokenizer import cached_tokenizer_from_config
+from vllm.tokenizers import cached_tokenizer_from_config
 
 from .. import ci_envs
 from .registry import HF_EXAMPLE_MODELS