### What this PR does / why we need it? Fix `ascend_env has no attr VLLM_ASCEND_ENABLE_CHUNK_MC2`, remove useless lines - vLLM version: v0.10.0 - vLLM main: 9edd1db02b --------- Signed-off-by: wangli <wangli858794774@gmail.com>
9edd1db02b