If it is a real, solid wood floor then you might be able to refinish it. I wouldn't bother with even considering that somehow you will be able to get the glue off, then polish up the floor and be done. I would determine if the floor is worthy of refinishing, then scrape off what glue you can with scrapers and then rent a floor refinishing sander (drum sander) and try 36 grit paper first. If this doesn't cut through it try 20 grit, then use 36, then 60 then 100. You will also need an edge sander and fine scraper. Maybe someone can send you a link that has full instructions. Be careful, if residue is black and papery then it might have asbestos - I'm not an expert, this is just what I have been told.