Disable profiles in sitemaps

Hello,

in my smf forum i use seo4smf and i get sitemaps ( /forum/sitemaps.php )

Someone can help me to disable url profiles in that sitemaps ?
There is a simple way to do that?

Now i disable profiles directory into the robots.txt ( Disallow: /forum/profiles/ ) but i don't know if is a good seo idea...

...before i put url profiles in sitemap and then i disable from robots.txt, so google send me a warning!!

Thank You!