- Use the correct method to remove the frame, so DOC
export will work correctly.
- Remove pagedesc attribute of the first text node if
the table is moved before it to avoid to generate a page
break.

Change-Id: I02802c4d25c947ec140b846c594848117815f1ce
Reviewed-on: https://gerrit.libreoffice.org/67093
Tested-by: Jenkins
Reviewed-by: Tamás Zolnai <tamas.zolnai@collabora.com>