Remove modules from source

node_modules/yallist/iterator.js

@@ -1,7 +0,0 @@
-var Yallist = require('./yallist.js')
-
-Yallist.prototype[Symbol.iterator] = function* () {
-  for (let walker = this.head; walker; walker = walker.next) {
-    yield walker.value
-  }
-}