Revert "Commit updated Javascript packages"

This reverts commit a88734348a.

build/javascript/node_modules/concat-map/example/map.js

@@ -1,6 +0,0 @@
-var concatMap = require('../');
-var xs = [ 1, 2, 3, 4, 5, 6 ];
-var ys = concatMap(xs, function (x) {
-    return x % 2 ? [ x - 0.1, x, x + 0.1 ] : [];
-});
-console.dir(ys);