this link (request deletion of bad video entry,) which for future reference can be found in editors -> edit video information (you can get there from your main site profile page, or your members main page)
I'm the guy who takes care of most of the deletion requests, but you might want to just say, "video didn't upload correctly, please delete the local upload only." or something to that effect in case I don't get to it first (to let the other mods know to just delete the local link, and not the entire entry)