What do Game Warden regulations say about deadly gut hooks? If a fish is gut hooked and is under the size requirement to keep, can I go ahead and fry it?

No, you can’t keep it. Best practice is to cut the line and release it with the hook still in if you can’t get the hook out. Believe it or not, the fish will find a way to spit the hook a surprising amount of the time. There have been tank studies and most of the fish lose the hook within a couple days and survive, unless the hook ruptured something important.