Fix unused imports and include rule.

tests/databases/test_api_db.py

@@ -1,6 +1,5 @@
 import pytest
 
-from auto_archiver.core import Metadata
 from auto_archiver.modules.api_db import AAApiDb
 
 

tests/databases/test_gsheet_db.py

@@ -54,7 +54,7 @@ def mock_media(mocker):
 
 
 @pytest.fixture
-def gsheets_db(mock_gworksheet, setup_module, mocker):
+def gsheets_db(mock_gworksheet, setup_module, mocker) -> GsheetsFeederDB:
     mocker.patch("gspread.service_account")
     config: dict = {
         "sheet": "testsheet",