Removed typing.List from bibox, hitbtc and kucoin

freqtrade/exchange/bibox.py

@@ -1,6 +1,6 @@
 """ Bibox exchange subclass """
 import logging
-from typing import Dict, List
+from typing import Dict
 
 from freqtrade.exchange import Exchange
 

freqtrade/exchange/hitbtc.py

@@ -1,5 +1,5 @@
 import logging
-from typing import Dict, List
+from typing import Dict
 
 from freqtrade.exchange import Exchange
 

freqtrade/exchange/kucoin.py

@@ -1,6 +1,6 @@
 """ Kucoin exchange subclass """
 import logging
-from typing import Dict, List
+from typing import Dict
 
 from freqtrade.exchange import Exchange