remove unused things

app/workers/newsroom/job/update-feed.js

@@ -6,10 +6,6 @@
 
 const path = require('path');
 
-const mongoose = require('mongoose');
-
-const Feed = mongoose.model('Feed');
-
 const { SiteWorkerProcess } = require(path.join(__dirname, '..', '..', '..', '..', 'lib', 'site-lib'));
 
 class UpdateFeedJob extends SiteWorkerProcess {