[Checkins] [zopefoundation/Zope] 68a824: Grep for `2.7` and remove places for Python 2 supp...

[Michael Howitz]

  Branch: refs/heads/drop-python2-support
  Home:   https://github.com/zopefoundation/Zope
  Commit: 68a8242121c56c9fc8e6c922ab86422b0b61bc4b
      https://github.com/zopefoundation/Zope/commit/68a8242121c56c9fc8e6c922ab86422b0b61bc4b
  Author: Michael Howitz <mh at gocept.com>
  Date:   2019-08-29 (Thu, 29 Aug 2019)

  Changed paths:
    M docs/INSTALL.rst
    M docs/operation.rst
    M docs/zope4/news.rst
    M src/Testing/ZopeTestCase/testZODBCompat.py

  Log Message:
  -----------
  Grep for `2.7` and remove places for Python 2 support.

Additionally removed also a bit of Zope 2.7 support code.