更新README.md，修改了docker镜像版本和相关依赖项，删除了一些示例文件以简化项目结构。

examples/offline_inference/openai_batch/openai_example_batch.jsonl

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+{"custom_id": "request-2", "method": "POST", "url": "/v1/chat/completions", "body": {"model": "meta-llama/Meta-Llama-3-8B-Instruct", "messages": [{"role": "system", "content": "You are an unhelpful assistant."},{"role": "user", "content": "Hello world!"}],"max_completion_tokens": 1000}}