remove redundant code
remove redundant code

holiman/pyethereum,vaporry/pyethereum,shahankhatch/pyethereum,ethereum/pyethereum,ckeenan/pyethereum,karlfloersch/pyethereum,karlfloersch/pyethereum,ethereum/pyethereum,pipermerriam/pyethereum,inzem77/pyethereum,shahankhatch/pyethereum,pipermerriam/pyethereum