Remove unused and duplicate datastructure

freqtrade/wallets.py

@@ -2,12 +2,12 @@
 """ Wallet """
 import logging
 from typing import Dict, Any, NamedTuple
-from collections import namedtuple
 from freqtrade.exchange import Exchange
 
 logger = logging.getLogger(__name__)
 
 
+# wallet data structure
 class Wallet(NamedTuple):
     exchange: str
     currency: str
@@ -18,12 +18,6 @@ class Wallet(NamedTuple):
 
 class Wallets(object):
 
-    # wallet data structure
-    wallet = namedtuple(
-        'wallet',
-        ['exchange', 'currency', 'free', 'used', 'total']
-    )
-
     def __init__(self, exchange: Exchange) -> None:
         self.exchange = exchange
         self.wallets: Dict[str, Any] = {}