Updating template not removing old items/triggers

[mcmyst]

Hello,

I made a template which is, for the moment, only checking ping on a remote host.
I made a first version which was like this :

Trigger:
{Template_A:icmpping[,2,25,68,100].count(900,0)}>2
Items:
icmppingloss[,2,25,68,200]
icmppingsec[,2,25,68,200,avg]
icmpping[,2,25,68,100]

I wanted to change the timeout from 100ms to 200ms, so I changed it in the template, and I upload the new version. Now I have 2 triggers and 4 items like this:

Trigger:
{Template_A:icmpping[,2,25,68,100].count(900,0)}>2
{Template_A:icmpping[,2,25,68,200].count(900,0)}>2
Items:
icmppingloss[,2,25,68,200]
icmppingsec[,2,25,68,200,avg]
icmpping[,2,25,68,100]
icmpping[,2,25,68,200]

I there a kind of trick to do in order to tell zabbix that I want to remove unused item in the template ?

Thank you

[richlv]

using xml import - no, you can not remove entities.
you can do that manually or via the api

[mcmyst]

Ok thank you