The DLE www redirect code is not working.

[Deiz]

Hello friends, I am trying to redirect my site from www to non-www, but it is not working as expected. When I enter the code as www.torrentfilmhd.com, it should change to torrentfilmhd.com, but it still opens with www. Is there another code that I can try for this? The code I am currently using is as follows:

RewriteCond %{HTTP_HOST} ^www\.torrentfilmhd\.com$ [NC]
RewriteRule ^(.*)$ http://torrentfilmhd.com/ $1 [R=301,L]

I am seeking a solution to this issue.