[issue20505] Remove resolution from selectors and granularity from asyncio

[Roundup Robot]

Roundup Robot added the comment:

New changeset 9c1840e8d643 by Victor Stinner in branch 'default':
Issue #20505: Oops, only print debug info if selector.select(timeout) took less
http://hg.python.org/cpython/rev/9c1840e8d643

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