Update Optional[x] -> x | None and Union[x, y] to x | y (#26633)

Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>

vllm/entrypoints/cli/main.py

@@ -5,8 +5,6 @@
 Note that all future modules must be lazily loaded within main
 to avoid certain eager import breakage."""
 
-from __future__ import annotations
-
 import importlib.metadata
 import sys