[issue42161] Remove private _PyLong_Zero and _PyLong_One variables

[Raymond Hettinger]

Raymond Hettinger <raymond.hettinger at gmail.com> added the comment:

I don't have a PR in-hand.  I just ran across this when trying to explain 3.9 vs 3.10 timings and M-1 vs Intel timings.   Ideally, all of these PRs should be reverted.  Short of that, each change needs to be reviewed to see if it created extra work inside a loop.  There are 35 calls to PyLong_GetOne and 3 for PyLong_GetZero.  Each of those should be checked.

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<https://bugs.python.org/issue42161>
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