WP Fastest Cache Plugin still needed?

Do I still need this Plugin if I activated hummingbird?
Because it says:
Remove render-blocking JavaScript:
.../wp-content/cache/wpfc-minified/4e2dddf9b5ebfb87615e093d31c4c60a/1471960095index.js

that's a file WP Fastest cache generates and i'm unsure if I still need this plugin