Is there any point in writing a “formal” 2-weeks notice for a job I hate?

I’m planning on giving my 2-weeks soon for a shitty minimum wage cafe job I’ve been at for a little over 3 months. Everything I’ve seen on writing a 2WN say things like you need to include gratitude, pleasantries, etc. Basically kissing ass in hopes that they’ll give you a good word if they’re called as a reference. But I’m pretty sure my boss knows I hate it there. I barely talk to him and basically ignore him all day, only confirming with one word answers whenever he tells me to do something. And given the short amount of time I’ve worked here, I feel like a formal, grateful letter would sort of read as bullshit anyways. Opinions on this?

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