Comparativa de Bancos on "[Plugin: WordPress SEO by Yoast] yoast_tracking cronjob not deleted after deactivate"

you can try adding something like for your yoast_tracking class

delete_action( 'my_task_hook', 'my_task_deactivate' );
// clean the scheduler
function my_task_deactivate() {

wp_clear_scheduled_hook( 'my_task_hook' );
}