Not likely to be feasible, sorry, but who knows...
There are some really inhumane practices people used to use to silence roosters and toms at a very young age, like a few days old, but if he's gobbling he's way past that and I wouldn't condone using those tactics anyway...
The surgery to decrow them is pretty expensive and birds often die under anesthetics, same as the inhumane methods, you have no guarantee that you'll get a live bird out of it. If you're determined though, theoretically the same principle would work as with decrowing a rooster, so you may be able to find a vet who does it or is willing to try it.
If you want him for breeding caponizing him is not an option, but really, not keeping a tom where you are is about your only real 'option'.
You'd need to move if you want to keep noisy animals, after all the main purpose of keeping a male animal is to breed, and chances are you'll get more noisy males out of the breedings, so it's a constant issue you will have to deal with. Personally living in rural areas is my choice, I'd rather not live any place where you're not allowed to have animals that make noise. Suburbia is freakishly quiet in some places, it's quite offputting and unnatural.
Best wishes.