bip32: run black linter

Author: darosior

bip32/bip32.py

@@ -281,7 +281,6 @@ def get_fingerprint(self):
         """Get the public key fingerprint."""
         return _pubkey_to_fingerprint(self.pubkey)
 
-
     @classmethod
     def from_xpriv(cls, xpriv):
         """Get a BIP32 "wallet" out of this xpriv