begin standardizing our method of streaming lines from files

lib/stream-file.js

@@ -59,7 +59,7 @@ const mkOffsetCounter = () => {
 // that this function has a lower memory profile than our classic method
 // of reading logs line by line.
 // it also allows the handler to abort reading at any time
-Stream.readFileBin = (env, stream, msgHandler, cb) => {
+Stream.readFileBin = (stream, msgHandler, cb) => {
     //const stream = Fs.createReadStream(path, { start: start });
     let keepReading = true;
     Pull(