Certified GKH Gardening Expert
Sterilizing trees requires chemical means. If I am not mistaken, most if not all of these are banned in your state.
Unfortunately, there isn't much you will be able to do, unless you pluck the flowers before they turn into fruit.
Here is an article that will offer more information: https://www.gardeningknowhow.com/ornamental/trees/tgen/fruit-tree-sterilization.htm