Removed unused code that broke Windows tests
Removed unused code that broke Windows tests

There are two statements in utils.parse_date_time that don't do anything
useful (the result is replaced by statements that follow), but that
don't work on Windows for given doctests. I removed them.

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