Remove versioneer / setuptools
trying to follow the lead set by https://github.com/numpy/numpy/pull/24196

@lithomas1
This pull request is stale because it has been open for thirty days with no activity. Please [update](https://pandas.pydata.org/pandas-docs/stable/development/contributing.html#updating-your-pull-request) and respond to this comment if you're still interested in working on this. Closing since there hasn't been much activity here, but feel free to reopen if/when you have time to revisit @lithomas1 we are dropping setuptools support for 3.0 right? I don't think the setuptools stuff is maintained anymore. (I just forgot to remove it)

I think my main objection was to the versioneer stuff. Not actively working on this - let's clear the queue