ofagent: Remove broken XenAPI support
ofagent: Remove broken XenAPI support

ofagent has code for agent-on-DomU support inherited from OVS agent.
However, it's incomplete and broken.  Because ofagent uses a direct
OpenFlow channel instead of ovs-ofctl command to program a switch,
the method to use the special rootwrap can not work.

Closes-Bug: #1368006
Change-Id: I0bb25a296d1f1e65c233ece6deaef6c095d78707

leeseulstack/openstack,adelina-t/neutron,SamYaple/neutron,wenhuizhang/neutron,leeseuljeong/leeseulstack_neutron,Metaswitch/calico-neutron,cloudbase/neutron-virtualbox,projectcalico/calico-neutron,skyddv/neutron,mandeepdhami/neutron,redhat-openstack/neutron,yanheven/neutron,jumpojoy/neutron,jacknjzhou/neutron,blueboxgroup/neutron,wolverineav/neutron,asgard-lab/neutron,silenci/neutron,suneeth51/neutron,rdo-management/neutron,leeseulstack/openstack,infobloxopen/neutron,alexandrucoman/vbox-neutron-agent,aristanetworks/neutron,JioCloud/neutron,dims/neutron,barnsnake351/neutron,neoareslinux/neutron,mahak/neutron,igor-toga/local-snat,CiscoSystems/neutron,openstack/neutron,paninetworks/neutron,chitr/neutron,watonyweng/neutron,paninetworks/neutron,adelina-t/neutron,dhanunjaya/neutron,miyakz1192/neutron,suneeth51/neutron,openstack/neutron,eonpatapon/neutron,vveerava/Openstack,miyakz1192/neutron,igor-toga/local-snat,magic0704/neutron,cernops/neutron,alexandrucoman/vbox-neutron-agent,sasukeh/neutron,takeshineshiro/neutron,shahbazn/neutron,SmartInfrastructures/neutron,asgard-lab/neutron,neoareslinux/neutron,glove747/liberty-neutron,barnsnake351/neutron,antonioUnina/neutron,sebrandon1/neutron,gkotton/neutron,yanheven/neutron,blueboxgroup/neutron,openstack/neutron,jerryz1982/neutron,CiscoSystems/neutron,infobloxopen/neutron,Metaswitch/calico-neutron,jumpojoy/neutron,pnavarro/neutron,eonpatapon/neutron,magic0704/neutron,noironetworks/neutron,wolverineav/neutron,NeCTAR-RC/neutron,cloudbase/neutron,cisco-openstack/neutron,swdream/neutron,leeseuljeong/leeseulstack_neutron,MaximNevrov/neutron,klmitch/neutron,javaos74/neutron,eayunstack/neutron,bigswitch/neutron,yuewko/neutron,apporc/neutron,jerryz1982/neutron,bgxavier/neutron,mmnelemane/neutron,watonyweng/neutron,gkotton/neutron,yuewko/neutron,waltBB/neutron_read,JianyuWang/neutron,noironetworks/neutron,mattt416/neutron,swdream/neutron,aristanetworks/neutron,silenci/neutron,MaximNevrov/neutron,dims/neutron,javaos74/neutron,cisco-openstack/neutron,takeshineshiro/neutron,leeseuljeong/leeseulstack_neutron,NeCTAR-RC/neutron,dhanunjaya/neutron,redhat-openstack/neutron,sebrandon1/neutron,glove747/liberty-neutron,vivekanand1101/neutron,jacknjzhou/neutron,SmartInfrastructures/neutron,huntxu/neutron,JioCloud/neutron,projectcalico/calico-neutron,rdo-management/neutron,pnavarro/neutron,bgxavier/neutron,mandeepdhami/neutron,CiscoSystems/neutron,wenhuizhang/neutron,mmnelemane/neutron,SamYaple/neutron,apporc/neutron,skyddv/neutron,blueboxgroup/neutron,huntxu/neutron,cernops/neutron,vivekanand1101/neutron,bigswitch/neutron,vveerava/Openstack,JianyuWang/neutron,mattt416/neutron,shahbazn/neutron,Stavitsky/neutron,cloudbase/neutron-virtualbox,mahak/neutron,antonioUnina/neutron,Stavitsky/neutron,cloudbase/neutron,mahak/neutron,klmitch/neutron,chitr/neutron,vveerava/Openstack,leeseulstack/openstack,sasukeh/neutron,gkotton/neutron,waltBB/neutron_read,eayunstack/neutron