To remove links from our site, we return a 410 code on on the links we want removed, and shows The page you requested was removed..In Webmaster Tools, I see all the 410 pages in Crawl Errors / Not Found.I'm worried that because they appear in Crawl Errors that they could be negatively affecting SEO rankings.  Is that the case, and if so, should I change the return codes from 410 to something else?
Why do 410 pages show as errors in Google Webmaster Tools?
seo audit;410 gone
Don't worry, a 410 is what Google suggests to use if you want a page removed. It falls under a crawler error but will clear itself up. Even if you were to block pages with a robots.txt it shows up as a crawler error. Same with meta noindex. They don't specify exactly the code or reason for the error and just generalize. If it's no longer on your site remove the page entirely, re-submit a new sitemap and wait.