Resolves: fdo#87141 Remove deletes the node, release doesn't

regression from introduction of boost::ptr_vector originally one had to Remove
and delete the return to delete it, while now the Remove automatically delete
it. This bare Remove to just "release" it seems to have been overlooked

Change-Id: I175f7c95862ce47402993e5e3b8feaa93af43e75
(cherry picked from commit efcbb12a27a380a442292f17c7f508555a66d4af)