Remove sslutils from openstack.common
Remove sslutils from openstack.common

This module has been imported but is not used. Let's remove it.

Change-Id: I0cafdb7ddc00ce58b0724cee293f5dad6f4a1817

openstack/networking-odl,CiscoSystems/networking-odl,FedericoRessi/networking-odl,schoksey/networking-odl,schoksey/networking-odl,FedericoRessi/networking-odl,mestery/x-stackforge-odl,flavio-fernandes/networking-odl,openstack/networking-odl,openstack/networking-odl,flavio-fernandes/networking-odl,CiscoSystems/networking-odl