Revert "CI: add jdcal to 3.6 build as openpyxl >= 2.4.5 is broken" (#15875)

jreback · web-flow · commit 4cb730e95353 · 2017-04-03T09:01:59.000-04:00
This reverts commit d1e1ba0. closes #15861
diff --git a/ci/requirements-3.6.run b/ci/requirements-3.6.run
@@ -2,10 +2,7 @@ python-dateutil
 pytz
 numpy
 scipy
-# openpyxl >= 2.4.5 should be dependent on jdcal
-# but is not for some reason
 openpyxl
-jdcal
 xlsxwriter
 xlrd
 xlwt
