[Checkins] [zopefoundation/Products.ZCatalog] ba4199: flake8: fix unused imported modules

[Andreas Gabriel]

  Branch: refs/heads/fix_unindex_convert_issue_69
  Home:   https://github.com/zopefoundation/Products.ZCatalog
  Commit: ba4199e97bf467c4881ad07df6bb0280f58ffd4f
      https://github.com/zopefoundation/Products.ZCatalog/commit/ba4199e97bf467c4881ad07df6bb0280f58ffd4f
  Author: Andreas Gabriel <gabriel at hrz.uni-marburg.de>
  Date:   2019-04-12 (Fri, 12 Apr 2019)

  Changed paths:
    M src/Products/PluginIndexes/DateIndex/DateIndex.py

  Log Message:
  -----------
  flake8: fix unused imported modules