...formulas" and "XLSX: Valid data-validations are not being exported". This reverts commits 6b40ebc9e67b165e85212d92c861fc6844d24f42 and c6bcd2f7c467b944765b363e9a900eaa6625ff6f. Reason: The original change was introduced to skip exporting certain formula in data validation checks to XLSX that made the files invalid for Excel. But because now some good validations get omitted, and it turns out Excel itself doesn't do better with the orignal files, either, let's revert the changes. Added unit test. (to subsequent_export_test4.cxx, the change in subsequent_export_test2.cxx comes from the revert) Change-Id: I89d552853f0119aa4bf3edbc3843edcf00f54a70 Signed-off-by: Aron Budea <aron.budea@collabora.com> Reviewed-on: https://gerrit.collaboraoffice.com/c/online/+/7876 Tested-by: Jenkins CPCI <releng@collaboraoffice.com> Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com> Reviewed-by: Karthik Godha <karthik.godha@collabora.com> (cherry picked from commit 28b08b853a09b6f7e68bf05eed2f59ed9fcad071) Reviewed-on: https://gerrit.libreoffice.org/c/core/+/208754 Tested-by: Jenkins Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>