Fatal Error – after Facebook plugin update

I’m using WordPress 3.4.2

I did some plugin updates in WordPress, and of them was regarding Facebook. The Error appeared at once. I tried to Login but the Fatal Error appeared every time.

I wish there is a way to reverse or delete the Facebook plugin altogether!

Below is the Error message I received:
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Fatal error: Call to undefined function add_settings_error() in /home/plus/public_html/wp-content/plugins/facebook/admin/settings-app.php on line 298
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Please advise! Thank you!
Afroditi

http://wordpress.org/extend/plugins/facebook/