Purge obspy.neries

http://www.seismicportal.eu closed down all services mapped in the obspy.neries client.  Currently public available webservices are listed here: http://www.seismicportal.eu/webservices.html - the FDSN WS-EVENT Web Service should be accessible using our fdsn client.

This would also remove the dependency on suds / suds-jurko.