If you don't have a good use for that Actions tab on your Facebook page, it's really easy to get rid of it (or add it back later). You can add, remove, and reorder installed application tabs right from your Facebook page. Here's how...
Just log into Facebook and click Settings at the top of the page. Then select Apps from the left menu.
Inside of the Apps menu, choose ActionSprout and select Edit Settings.
From here click Remove and then Okay.
That’s it! For more information on tabs and apps visit the Facebook help website.