[Checkins] [zopefoundation/ZConfig] 39a515: Remove outdated pip option

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/ZConfig
  Commit: 39a51572d51763cc3ca1ff5e9f1b92afb6b54c23
      https://github.com/zopefoundation/ZConfig/commit/39a51572d51763cc3ca1ff5e9f1b92afb6b54c23
  Author: Patrick Gerken <patrick.gerken at zumtobelgroup.com>
  Date:   2015-10-17 (Sat, 17 Oct 2015)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Remove outdated pip option