Revert "[BUGFIX] Prevent wrong ref_index for fields with soft references"

This reverts commit 7dfd4607.

Change-Id: I695b897597deb8d252cd9988e671175ebd8a1835
Reviewed-on: http://review.typo3.org/37082


Reviewed-by: Nicole Cordes <typo3@cordes.co>
Tested-by: Nicole Cordes <typo3@cordes.co>