refactor; remove unnecessary channel ops
refactor; remove unnecessary channel ops

coreos/doozerd,soundcloud/doozerd,rowhit/doozerd,rowhit/doozerd,ylong/doozerd,rowhit/doozerd,npchp110/doozerd,zyxar/doozerd,jmptrader/doozerd,ha/doozerd,tempbottle/doozerd,ha/doozerd,npchp110/doozerd,coreos/doozerd,jmptrader/doozer,rowhit/doozerd,coreos/doozer,zyxar/doozerd,bitly/doozerd,soundcloud/doozerd,soundcloud/doozer,tempbottle/doozerd,magastzheng/doozerd,ylong/doozerd,tempbottle/doozerd,zyxar/doozerd,bitly/doozerd,jmptrader/doozerd,jmptrader/doozerd,soundcloud/doozerd,magastzheng/doozerd,bitly/doozerd,tempbottle/doozerd,magastzheng/doozerd,npchp110/doozer,ylong/doozerd,ha/doozer,soundcloud/doozer,npchp110/doozerd,jmptrader/doozerd,zyxar/doozerd,npchp110/doozerd,ylong/doozerd,magastzheng/doozerd,soundcloud/doozerd,ha/doozerd,coreos/doozerd