Removing UTF-8 message decoding due to not supporting of non-ascii characters signing by Ledger.

Author: Bertrand256

btchip/btchip.py

@@ -430,7 +430,7 @@ def signMessagePrepareV2(self, path, message):
 				dataLength = blockLength
 			else:
 				dataLength = len(message) - offset
-				params.extend(bytearray(message[offset: offset + dataLength]))
+			params.extend(bytearray(message[offset: offset + dataLength]))
 			apdu = [ self.BTCHIP_CLA, self.BTCHIP_INS_SIGN_MESSAGE, 0x00, p2 ]
 			apdu.append(len(params))
 			apdu.extend(params)