### What this PR does / why we need it? Since, `vllm bench` cli has optimized enough for production use(support more datasets), we are now do not need to copy vllm codes, now , with vllm installed, we can easily use the benchmark cli ### Does this PR introduce _any_ user-facing change? No ### How was this patch tested? CI passed --------- Signed-off-by: wangli <wangli858794774@gmail.com>