idk why these weren't committed

tests/test_token_usage.py

@@ -1,9 +1,7 @@
 import sys
 import os
-import hashlib
 from unittest.mock import patch, MagicMock
 from types import SimpleNamespace
-from pathlib import Path
 
 sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))