[OTHER]: Duplicate entry of sieve of eratosthenes

[SpiderMath]

What would you like to share?

There's three entries in total for Sieve of Eratosthenes on the website, but the problem is that there's a primary one out of the three which has a majority of the implementations, including that of JS. However, there's another one which has just another JS implementation of the exact same thing, and it's named Sieve of Eratosthenes Int Array, which is both a weird name and just a random duplicate entry. Since it only had a JS entry, I wasn't sure if I should open an issue on the website repo or here, hence I thought as this was a JS repo issue I'd open it here. So, do we remove the duplicate entry from the repository?

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