Clean up configuration against actual interfaces - how to

Hi all,

It seems to me that i am able to configure non-existence interfaces into the actual configuration despite having no relevant physical ports. 

e.g.  ( i don't have a xe-1/0/1 interface at all)

show configuration interfaces xe-1/0/1
unit 0 {
family ethernet-switching {
storm-control default;
}
}

I find this to be very confusing.... when looking at the configuration VS the actual setup.

q1) How can i do a clean up of the configuration such that only what is "physically and actually in used"  will be shown ?

Regards,

Alan