fix(webpack): don't output deptree.js, this requires a minor tweak to the optimization config if you have it customized

Author: danbucholtz

config/optimization.config.js

@@ -28,7 +28,7 @@ module.exports = {
   },
 
   plugins: [
-    ionicWebpackFactory.getIonicEnvironmentPlugin(),
+    ionicWebpackFactory.getIonicOptimizationEnvironmentPlugin(),
   ],
 
   // Some libraries import Node modules but don't use them in the browser.