Removed spurious check for ip version
Removed spurious check for ip version

We may assume that _add_ingress_ra_rule() receives only RA (=IPv6)
ports, so no need to check IP version one more time.

The corresponding IP version filter is already applied in
_select_ra_ips_for_network_ids().

Change-Id: Ibde56a2eb32eed468defdd02a44cc3360ce82e53

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