Merge pull request #2881 from lxhelmer/patch-6

Update osa4b.md

Author: mluukkai

src/content/4/fi/osa4b.md

@@ -200,7 +200,7 @@ const app = require('./app') // varsinainen Express-sovellus
 const config = require('./utils/config')
 const logger = require('./utils/logger')
 
-const server = http.createServer(app)
+
 
 app.listen(config.PORT, () => {
   logger.info(`Server running on port ${config.PORT}`)