delete unused code
delete unused code

dangershony/NStratis,MetacoSA/NBitcoin,lontivero/NBitcoin,stratisproject/NStratis,HermanSchoenfeld/NBitcoin,thepunctuatedhorizon/BrickCoinAlpha.0.0.1,bitcoinbrisbane/NBitcoin,NicolasDorier/NBitcoin,you21979/NBitcoin,MetacoSA/NBitcoin