fix(build): remove source files from dist dir

Author: jkuri

lib/broccoli/angular2-app.js

@@ -35,17 +35,12 @@ function Angular2App(defaults, options) {
 Angular2App.prototype.toTree = function () {
   var assetTree = this._getAssetsTree();
   var tsTree = this._getTsTree();
-  var tsSrcTree = this._getTsSrcTree();
   var indexTree = this._getIndexTree();
   var vendorNpmTree = this._getVendorNpmTree();
   var excludeDotfilesTree = this._getPublicTree();
 
   var buildTrees = [assetTree, tsTree, indexTree, vendorNpmTree];
 
-  if (!isProduction) {
-    buildTrees.push(tsSrcTree);
-  }
-
   if (fs.existsSync('public')) {
     buildTrees.push(excludeDotfilesTree);
   }
@@ -326,22 +321,6 @@ Angular2App.prototype._getAssetsTree = function () {
   });
 };
 
-
-/**
- * Returns the `tsSrc` tree.
- *
- * @private
- * @method _getTsSrcTree
- * @return {Tree} The TS src tree.
- */
-Angular2App.prototype._getTsSrcTree = function () {
-  return new Funnel(sourceDir, {
-    include: ['**/*.ts'],
-    allowEmpty: true
-  });
-};
-
-
 /**
  * Returns the `excludeDotfiles` tree.
  *