The MIT No Attribution licence https://choosealicense.com/licenses/mit-0/ doesn't require an attribution.
It's the licence I choose for new projects.
It's the licence I choose for new projects.
edit: to clarify, he's allowing you to _use_ it however you like, including making a derivative work, including it wholesale, etc. However, claiming authorship of the original code would still run afoul of the original copyright.
edit2: oh - if you mean relicensing the code - that is allowed.