remove unneeded XML.  bioentities already have a publications collection
remove unneeded XML.  bioentities already have a publications collection


Former-commit-id: a07452c7e626d7a9705c55a28aab1e3dafc3fcdc
julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine