SQL zabbix remove HOST

# Discovery the HostID
SELECT hostid FROM hosts WHERE host = 'servername';
+--------+------------+
| hostid | host       |
+--------+------------+
|  10094 | servername |
+--------+------------+
1 ROW IN SET (0.00 sec)

# Remove Triggers FROM HostID 10094
DELETE triggers
        FROM triggers
        LEFT JOIN functions ON triggers.triggerid=functions.triggerid
        LEFT JOIN items ON functions.itemid=items.itemid
        WHERE items.hostid=10094;

# Remove Functions FROM HostID 10094
DELETE functions
        FROM functions
        LEFT JOIN items ON functions.itemid=items.itemid
        WHERE items.hostid=10094;

# Remove Itens FROM HostID 10094
DELETE FROM items WHERE hostid=10094;