Hi Alex,

The simples in my opinion would be to open the View which is hosting the services you want to delete. Once the view card is open, you can switch from the default visual page to the data page of the view. On this data page, you'll now see the list of items which are located in this view. In this list, you can multiple select all services at once. Once all are selected, you can then right click and delete all of the selected services at once.

Hope this helps!