removed unintended singleton
removed unintended singleton

ssssam/rdflib,dbs/rdflib,RDFLib/rdflib,RDFLib/rdflib,armandobs14/rdflib,ssssam/rdflib,marma/rdflib,yingerj/rdflib,dbs/rdflib,marma/rdflib,armandobs14/rdflib,marma/rdflib,dbs/rdflib,yingerj/rdflib,RDFLib/rdflib,yingerj/rdflib,marma/rdflib,RDFLib/rdflib,dbs/rdflib,armandobs14/rdflib,avorio/rdflib,avorio/rdflib,ssssam/rdflib,yingerj/rdflib,avorio/rdflib,ssssam/rdflib,avorio/rdflib,armandobs14/rdflib