query( $wpdb->prepare( "DELETE FROM %i WHERE meta_key LIKE %s", $wpdb->postmeta, $wpdb->esc_like('_acpimg_') . '%' ) ); // 3. Clear scheduled cron hooks (incl. the legacy weekly cron from older builds). wp_clear_scheduled_hook('acpimg_cron_jobs_tick'); wp_clear_scheduled_hook('acpimg_weekly_ping');