not2easy - 7:05 pm on Aug 21, 2013 (gmt 0)
When you say "along with other so many URLs" do you mean that you snipped the rest of the URLs to post it here? Or do you mean that you are getting a sitemap for each page on the site? Most sitemaps are generated by use of an installed script and automatically update when a new page is added. They don't normally carry the script in the header, this one looks like it was not correctly installed, if I had to guess. Depending on the type of site it is, there are a variety of scripts you can use. I would think about uninstalling the script that is generating that as output and installing a new one. Plugins generally refers to scripts added to WordPress, since this isn't a wordpress site, it is more likely a script, but you didn't say what kind of site it is. A defective sitemap would be giving you errors in your Webmaster Tools accounts.