Remove the old parser code

Thus introducing a few functional regressions, but it's going to be
easier to fix things up without the old code knocking around and
getting in the way.

core/modules/macros/version.js

@@ -1,25 +0,0 @@
-/*\
-title: $:/core/modules/macros/version.js
-type: application/javascript
-module-type: macro
-
-Version macro
-
-\*/
-(function(){
-
-/*jslint node: true, browser: true */
-/*global $tw: false */
-"use strict";
-
-exports.info = {
-	name: "version",
-	params: {
-	}
-};
-
-exports.executeMacro = function() {
-	return $tw.Tree.Text($tw.version);
-};
-
-})();