What is my legacy Facebook API call?

I recently received a notification that I am using one or more legacy calls that will soon affect the site. The problem is that I cannot find any useful documentation to determine which call is out of date, and every call that I make seems to be all right.

Can someone tell me which of these calls is outdated?

FB.init
FB.Event.subscribe  // auth.login, auth.logout
FB.getLoginStatus
FB.api
FB.login
FB.logout

As announced on the Facebook developers blog, Facebook is in the process of removing methods from the Javascript SDK that are not officially supported. Your application "MY APP" (MY APP. NUMBER) is identified as using such methods, and we will inform you about it now so that you can make the necessary changes, to avoid when we first make these methods blank stubs, and then when we delete their.

Thank! Brett