streams/Code/Update/_1219.php

<?php

namespace Code\Update;

class _1219
{

    public function run()
    {
        q("START TRANSACTION");

        $r = q(
            "DELETE FROM xchan WHERE
			xchan_hash like '%s' AND
			xchan_network = 'activitypub'",
            dbesc(z_root()) . '%'
        );

        if ($r) {
            q("COMMIT");
            return UPDATE_SUCCESS;
        } else {
            q("ROLLBACK");
            return UPDATE_FAILED;
        }
    }
}