Don't attempt to save index when there are no posts or profile details (complained about directory not existing)

src/sources/getUserPosts.js

@@ -1,14 +1,10 @@
 'use strict';
 
-const config = require('config');
 const Promise = require('bluebird');
-const fs = require('fs-extra');
-const yaml = require('js-yaml');
 
 const getIndex = require('./getIndex.js');
 const getArchivePostIds = require('../archives/getArchivePostIds.js');
 const curateUser = require('../curate/user.js');
-const interpolate = require('../interpolate.js');
 
 async function getUser(username, reddit) {
     try {