[ic] How to delete additional shipping addresses?

[Interchange User]

Hi, I'm using IC 4.8.5, and I would like to provide a means to allow 
users to delete an additional shipping address that had been created.

I can't find any relevant codes for the deletion (can only find 
set_shipping, get_shipping, get_shipping_names), and I'm unfamiliar 
with blob (I'm using mysql, and there's an address_book blob field).  
Adding and Editing should be relatively easier (I think).  But I just 
can't figure out the commands to use for deletion.  I noticed the 
ship_addresses_removed.html file, but it doesn't seem to be called by 
any pages at all.  Not even at the UI.  The UI also only allowed for 
adding/editing, but no deleting.

Any pointers?