If you connected your Facebook account when you first created an account, you can choose to disconnect it at any time.
Important: This does not apply to Facebook Live for Livestream.
To do this, go to Settings.
At the bottom of the menu, you will see the Facebook account option. Hover your mouse over the green Connected button; this will turn the button red and it will read Disconnect.
Click the red Disconnect button to disconnect your Facebook account from Livestream. When you are done, click Save.