Revert "Enable removal of subfeatures. Don't rebuild id lookup table by visiting full feature graph in StoredFeatures#buildMaps()."

This reverts commit 9a174b44164707fcaafed2ed21075909f6954ba0.
Fix for ticket #467: Transaction went wrong. http://tracker.deegree.org/deegree-services/ticket/467
Merge branch 'ticket-467'