sorry, this should be for SharePoint 2013.
when we choose structure navigation and 'show sub sites' and 'pages'. the pages under current site page library will show up in the quick launch, then we can choose to hide those page in quicklaunch form the UI, but we are not able to delete those page in quick launch from the UI, I wondered if we can do that programmatically? to delete a page item in quick launch?
I understand we can delete heading and author links but I am not talking about them. I am talking the pages within the sites.