Revert "Broken security/password when saving to older odf (sx?) formats."

This exports ODF 1.1 files as ODF 1.2 packages, which is quite wrong.
Since we don't support OOoXML export any more, just revert it.

This reverts commit 06b918053fb9cf455cf431ca001a63030092d018.

Change-Id: I27bdd83f96e46be054f808ff6782ad16ecc90da5