keystore bip39: minor clean-up
keystore bip39: minor clean-up

wakiyamap/electrum-mona,neocogent/electrum,neocogent/electrum,fujicoin/electrum-fjc,neocogent/electrum,fujicoin/electrum-fjc,pooler/electrum-ltc,pooler/electrum-ltc,wakiyamap/electrum-mona,vialectrum/vialectrum,spesmilo/electrum,wakiyamap/electrum-mona,spesmilo/electrum,wakiyamap/electrum-mona,spesmilo/electrum,pooler/electrum-ltc,pooler/electrum-ltc,vialectrum/vialectrum,vialectrum/vialectrum,fujicoin/electrum-fjc,spesmilo/electrum