Don't include sitemap index in sitemap index
Don't include sitemap index in sitemap index

tomnatt/libraries.io,abrophy/libraries.io,librariesio/libraries.io,abrophy/libraries.io,librariesio/libraries.io,librariesio/libraries.io,librariesio/libraries.io,tomnatt/libraries.io,abrophy/libraries.io,tomnatt/libraries.io