Button to remove an item from the order

I’m looking for a way of adding a button next to each item that will delete it from the order.

The file is:
woocommerce > order > order-details-item.php

??I found a function to use, which is: wc_delete_order_item()

It removes all the items if I add it inside the loop. However how do I run the function on a click of a button?

I’ve tried using ajax however having ‘wc_delete_order_item()’ in an external file comes up with ‘Undefined function’.??

Please help.