remove unused imports

freqtrade/data/history.py

@@ -5,8 +5,6 @@ includes:
 * download data from exchange and store to disk
 """
 
-import gzip
-
 import logging
 from pathlib import Path
 from typing import Optional, List, Dict, Tuple, Any

freqtrade/tests/test_misc.py

@@ -2,7 +2,6 @@
 
 import datetime
 from unittest.mock import MagicMock
-from pathlib import Path
 
 from freqtrade.data.converter import parse_ticker_dataframe
 from freqtrade.misc import (common_datearray, datesarray_to_datetimearray,