Comment and unusable code cleanup

Issue#: CODE-2426


git-svn-id: svn+ssh://svn.code.sf.net/p/pcgen/code/Trunk@22875 ef53c05b-3124-4d59-ae7d-fe3273f42be7
Fix: ReferenceManufacturer destructive and over-protective on single reference creation
Issue#: CODE-2443


git-svn-id: svn+ssh://svn.code.sf.net/p/pcgen/code/Trunk@22876 ef53c05b-3124-4d59-ae7d-fe3273f42be7