How to reset post views count

I need to reset the post views count of a web site. Currently Im using this on my functions.php:

function getPostViews($postID){
     $count_key = 'post_views_count';
     $count = get_post_meta($postID, $count_key, true);
     if($count==''){
         delete_post_meta($postID, $count_key);
         add_post_meta($postID, $count_key, '0');
         return 0 View;
     }
     return $count.' Views';
 }
 function setPostViews($postID) {
     $count_key = 'post_views_count';
     $count = get_post_meta($postID, $count_key, true);
     if($count==''){
         $count = 0;
         delete_post_meta($postID, $count_key);
         add_post_meta($postID, $count_key, '0');
     }else{
         $count++;
         update_post_meta($postID, $count_key, $count);
     }
 }

 add_filter('manage_posts_columns', 'posts_column_views');
    add_action('manage_posts_custom_column', 'posts_custom_column_views',5,2);
    function posts_column_views($defaults){
        $defaults['post_views'] = __('Views');
        return $defaults;
    }
    function posts_custom_column_views($column_name, $id){
        if($column_name === 'post_views'){
            echo getPostViews(get_the_ID());
        }
    }

I dont want to reset it weekly, just want to clear the values, to start counting it again.