Don't disable "Insert table" option in case of Ole object

Change-Id: Ibe87d35db320f4a9d5c971e3f7b25199fcacbde4
Reviewed-on: https://gerrit.libreoffice.org/18897Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Katarina Behrens <Katarina.Behrens@cib.de>