Mobs dont drop weapons or armor

I have a mob farm in my perimeter on my world, it is working great but collection is getting clogged by hundreds of tools and armor. im attempting to make a fabric mod or a plugin that will stop mobs from dropping anything other than basic drops, ie: a zombie will drop flesh, iron, potatos, etc. but will not drop things like a shovel it spawns with. I also need looting to still affect the mobs because the farm is looting based. any suggestions on how this could be done? im very new to this.