Code to utilize the newly-created wp_cron schedule

gistfile1.php

// Add the action or social posts deleting
add_action( 'social_delete_posts', function() {
  $args = array(
    'post_type' => 'social_posts',
    'post_status' => 'any',
    'posts_per_page' => -1,
    'date_query' => array(
      array(
        'column' => 'post_date_gmt',
        'before' => '1 month ago',
      ),
    ),
  );
  $posts = get_posts($args);
  foreach( $posts as $post ) {
    $force_delete = true; // bypass trash
    wp_delete_post( $post->ID,  $force_delete );
  }
} );