Merge pull request #6397 from samgermain/todos

edited todo-lev comments

freqtrade/exchange/exchange.py

@@ -1528,7 +1528,6 @@ class Exchange:
         :return: Dict of [{(pair, timeframe): Dataframe}]
         """
         logger.debug("Refreshing candle (OHLCV) data for %d pairs", len(pair_list))
-        # TODO-lev: maybe depend this on candle type?
         drop_incomplete = self._ohlcv_partial_candle if drop_incomplete is None else drop_incomplete
         input_coroutines = []
         cached_pairs = []