Remove Python 2 select.select() code #7964
referenced this pull request
Jun 27, 2019
Likewise, I think this is unlikely to cause a merge conflict because we have been using the Python 3 selector code for the past two weeks stably and I don't anticipate any changes having to be made to these particular lines for to stabilize 1.17.x. Fine waiting if we still think that's the right choice, though.