CODE EXAMPLE FOR PHP

Remove class from body tag in wordpress

// Remove class from body tag
function alpha_body_class($classes){
   unset($classes[array_search('class-one', $classes)]);
   unset($classes[array_search('class-two', $classes)]);
   unset($classes[array_search('class-three', $classes)]);
   return $classes;
}
add_filter('body_class', 'alpha_body_class');