Revert "implemented WriteNode (still need some OutputLineIEmitter)"
Revert "implemented WriteNode (still need some OutputLineIEmitter)"

CA-122 #comment This reverts commit dea79fd39eda1dfdc4a63faa0d7f930f41d08f98 because this commit lives on branch CA-122/write-node now

manpen/thrill,manpen/thrill,manpen/thrill,manpen/thrill,manpen/thrill