Move XEnumeration Java tests to C++ for
ScIndexEnumeration_DDELinksEnumeration.

Change-Id: I586fbd67f6c862f529461265536e68fea84b8c17
Reviewed-on: https://gerrit.libreoffice.org/63394
Tested-by: Jenkins
Reviewed-by: Jens Carl <j.carl43@gmx.de>