[refactoring] drop result execution callback
[refactoring] drop result execution callback

bf4/sensu,miyakawataku/sensu,roobert/sensu,solarkennedy/sensu,keymone/sensu,withnale/sensu,m4ce/sensu,sensu/sensu,pauloconnor/sensu,upfluence/sensu,somic/sensu,rbramwell/sensu,crewton/sensu,npe9/sensu,cread/sensu,yonglehou/sensu,portertech/sensu