Please don't do this Jezeru, even if you still have 2 Patrons left it's not very nice to forget about their contributions, at the very least release the latest update you've been working on for them, withholding it because of what you said is kind of a dick move, you can be done with it all after that, that is, if you really think that's the right decision to make.
What you really should be doing is releasing the game here until it's got some lengthy content to it, then people can decide if they want to support you, I can see how it's not easy for them to want to keep supporting the game considering it's very early in development, you're actually really lucky to have any Patrons at all honestly.
You cant rush these things, getting impatient wont help, I understand how hard it is to make these games and that you would rather have some money for all your hard work, but for now I think it would be best to just work on the game at your own pace for fun like some creators do (I actually thought you were making the game for fun anyway, but I guess I was wrong about that), don't disregard all the feedback everyone has given you thus far, it's all helpful stuff.
And try not to get too frustrated either it will only lead to more rash decision making like this, try reflecting on what you said and what Ive just said. It would indeed be really sad to see you go like this, the game has potential for something good.