I ran a back link report (backlinkwatch) for a brandable domain we just bought and now transferred new content over, and almost 80% of backlinks go to dead pages, not even 404 pages. The backlinking was done in 2007 so I see lots of url.com/resource-links type of link exchanges but the whole site is entirely dead when you visit. Should I remove these links in google webmaster? We plan on using this domain to slap on fresh content. We do not want to use as PBN. I wasnt able to do a report before purchase. Domain was bought because it's "brandable"