Remove logging of un-necessary message

[Desrever Nu]

• Too many messages printed on the console with the live bot.

 "14:48:15.763 c.nubits.nubot.store.OrderFetchTask 57 INFO  - got current orders 4
>> 14:48:16.733 c.n.n.t.wrappers.PoloniexWrapper 189 INFO  - balance double : 0.00345463
>> 14:48:16.733 c.n.nubot.store.BalanceFetchTask 74 INFO  - for Currency{fiat=false, code=BTC, extendedName=Bitcoin} got amount .00345463 BTC"