You may want to prevent the display of the WordPress version you are using that appears automatically in the site header. One reason to do this is securing your WordPress site.
If those trying to breach your site know the version you use by looking at the site source, it can guide them and make their job easier because they can easily check for security vulnerabilities in that version.
// remove version info from head and feeds
function sv_complete_version_removal() {
return '';
}
add_filter('the_generator', 'sv_complete_version_removal');