Revert "No 404 responses for missing language files"

This reverts commit f0c941e5ae.

src/routes/index.js

@@ -157,11 +157,6 @@ module.exports = function (app, middleware, hotswapIds) {
 		res.redirect(relativePath + '/assets/language' + req.path + '.json?' + meta.config['cache-buster']);
 	});
 
-	// stop 404's on `/assets/language` route
-	app.use(relativePath + '/assets/language', function (req, res) {
-		res.json({});
-	});
-
 	app.use(relativePath, express.static(path.join(__dirname, '../../', 'public'), {
 		maxAge: app.enabled('cache') ? 5184000000 : 0
 	}));