fix: remove unused import and fix formatting in api_token test

Author: zeke

tests/test_api_token_compatibility.py

@@ -2,7 +2,6 @@
 
 from __future__ import annotations
 
-import os
 import pytest
 
 from replicate import Replicate, AsyncReplicate, ReplicateError
@@ -86,4 +85,4 @@ def test_bearer_token_overrides_env(self, monkeypatch: pytest.MonkeyPatch) -> No
         """Test that explicit bearer_token overrides environment variable."""
         monkeypatch.setenv("REPLICATE_API_TOKEN", "env_token")
         client = Replicate(bearer_token="explicit_token")
-        assert client.bearer_token == "explicit_token"
+        assert client.bearer_token == "explicit_token"