Fix the democking patch.

OBS-URL: https://build.opensuse.org/package/show/devel:languages:python/python-columnize?expand=0&rev=5

python-columnize-no-mock.patch

@@ -22,7 +22,7 @@
  "Unit test for Columnize"
 -import mock, operator, os, sys, unittest
 +import operator, os, sys, unittest
-+from unittest.mock import mock
++import unittest.mock as mock
  
  top_builddir = os.path.join(os.path.dirname(__file__), os.path.pardir)
  if top_builddir[-1] != os.path.sep: