fix: remove unused AnyTokenizer import from vllm_offline.py

Author: Ki-Seki

outlines/models/vllm_offline.py

@@ -13,7 +13,6 @@
     from vllm import LLM
     from vllm.sampling_params import SamplingParams
     from vllm.transformers_utils.tokenizer import (
-        AnyTokenizer,
         PreTrainedTokenizer,
         PreTrainedTokenizerFast,
         TokenizerBase