Envoy is a tweak by iKilledappl3 which adds a preferences pane settings in the Facebook messenger app, the new preferences lets you disable either or both of the “Active Now” and “Favorites” sections which Facebook added, from showing up in the app. 

Once you have chosen the settings you want adjusted you respring your device to apply the changes and it is advisable to also quit the Facebook Messenger app and then restart it to see your changes.

Personally I like this tweak as it removes the clutter that Facebook seems to think is an improvement and better yet Envoy is a free tweak and available from the main BigBoss repo here.