This schedule is added by another plugin

Hi, guys –

Ever so often, an error appears on my WordPress dashboard that Woocommerce thumbnail generation has commenced. Sometimes I am able to disable and sometimes not.

I installed WP Crontrol to check the cron jobs and I am seeing ‘wp_1_wc_regenerate_images_cron_interval’ under Cron Schedules. However, when I hover over it, I get this message:

This schedule is added by another plugin and cannot be deleted

I have no idea how to trace the source plugin and there’s no corresponding item under Cron Events. After some research, I found these two snippets. The first breaks my site:

delete_action('wp_1_wc_regenerate_images_cron_interval', 'cron_job_delete');
// clean the scheduler
function cron_job_delete()
{
wp_clear_scheduled_hook('wp_1_wc_regenerate_images_cron_interval');
}

and I am not sure if the second does anything:

add_action("init", "clear_crons_left");
function clear_crons_left() {
    wp_clear_scheduled_hook("cron_name");
}

Any help in disabling this cron job would be appreciated. Thanks in advance.