Cleanup ignat99 feat

New PR from https://github.com/Ignat99/OpenBazaar/pull/1 directly into OpenBazaar:develop.
It isn't @Ignat99 fault. It has been like that for a long time (look [here](https://github.com/Ignat99/OpenBazaar/blob/fcb45d15863628f149b097777fea19bda7e98650/node/market.py#L505)).

Maybe it's not a bug, after all.