Remove redundant setuptools in pyproject.toml requires (#105303)
There are two `setuptools` require in requires. It was a typo in original PR: https://github.com/pytorch/pytorch/commit/e85dfb6203ed2e02604d684afb89a23e6536ec5c .
This PR just remove the redundant one.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/105303
Approved by: https://github.com/mikaylagawarecki
