How to Delete Favorites on a Mac

Click the icon for your Finder from your dock. Click 'All My Files' from the displayed sidebar to open your Finder window.
Select the type of favorite you want to delete. For example, if you no longer need immediate access to a document, select 'Documents' from the left sidebar under 'Favorites.'
Highlight the link and press the 'Delete' key.
Remove an item from the listing of types of favorites in the sidebar by pressing the 'Command' key and dragging the item out of the sidebar.
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How to Delete Favorites in the Facebook App for iPhone

Open the Facebook app on your iPhone.
Tap the 'Facebook' logo to get to the app's home screen.
Press a finger down on the favorite that you want to delete. Hold it down for approximately three seconds, until the favorite starts to wiggle.
Tap the X in the corner of the favorite's thumbnail icon to delete that favorite from your Facebook home screen.
Press the Home button to stop the rest of your favorites from wiggling.
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