[Checkins] [zopefoundation/Zope] f48dda: no reason to lint on both Python 2.7 and 3.6 (#488)

[Jens Vagelpohl]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/Zope
  Commit: f48dda68b40f9862b3d4484b1c78bcfd981ae85a
      https://github.com/zopefoundation/Zope/commit/f48dda68b40f9862b3d4484b1c78bcfd981ae85a
  Author: Jens Vagelpohl <jens at netz.ooo>
  Date:   2019-03-08 (Fri, 08 Mar 2019)

  Changed paths:
    M .travis.yml
    M tox.ini

  Log Message:
  -----------
   no reason to lint on both Python 2.7 and 3.6 (#488)