Delete rice boxes with dev script

assets/build/dev.js

@@ -8,6 +8,10 @@ var chalk = require('chalk')
 var webpack = require('webpack')
 var config = require('./config')
 var webpackConfig = require('./webpack.dev.conf')
+var fs = require('fs')
+
+fs.unlinkSync('./rice-box.go')
+fs.unlinkSync('./caddy/hugo/rice-box.go')
 
 rm(path.join(config.assetsRoot, config.assetsSubDirectory), err => {
   if (err) throw err