I recently moved a website from html to php. For all of the important pages I applied 301s, however there are a lot of pages left I really dont care about. These pages have started showing up in Google webmaster central. I was going to 301 them all but wonder is there a limit to what's a healthy number of 301s to have on a website. Since this is only a 50-100 page site now, this would mean about 50 urls are being redirected. I would prefer to just tell Google they don't exist anymore and have them remove from the serps, if that makes sense. Is there any way to do this?