Also if you want to do this manually the minus anchor point tool which is part of the pen tool set the pen icon with the minus sign will let you delete the top one. Also if you click on the anchor point with the direct select tool and then hit delete it should delete just that one anchor point.
But Concatenate might make this aquick fix.
you'll find it useful.
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Among this page of awesome scripts (not written by me) there is a script called "merge overlapped anchors" that will do what you're looking for.