DragNdelete
dragNdelete is an shell based free software to delete through draging with admin password !
you can download this app from this url http://cl.ly/2B2O431v0w0J ! simply save it to Application folder then drag it to dock !
if you want to delete any file then drag that file to this App or App in dock type your admin password boom !! your file will delete instantly ! you cannot find these files in your trash !