fix: remove unused platform import from aiservice.py

Co-authored-by: Kevin Turcios <undefined@users.noreply.github.com>

Author: github-actions[bot]

codeflash/api/aiservice.py

@@ -2,7 +2,6 @@
 
 import json
 import os
-import platform
 import time
 from itertools import count
 from typing import TYPE_CHECKING, Any, cast