Remove reference to QUANTUM_OVS_CONF_FILE before it is created.
Remove reference to QUANTUM_OVS_CONF_FILE before it is created.

This was introduced by commit 962c25eb7421094c6fc1ef7edb56fe1da69a972b,
but it completely breaks a clean install of devstack with OVS.

Note: the author was probably attempting to get devstack working in a
multi-node environment.  There is another branch under submission for
that already.

Change-Id: Ie2cbcbd58e0d0babf9b0af0db9aa879703a2aeb9

tianweizhang/devstack,ewindisch/raspi-devstack,parul24/devstack,sc68cal/devstack,openstack-dev/devstack,samgoon/devstack,bljgaurav/openstack-test,r-mibu/devstack,BSJAIN92/OpenStack,LoHChina/devstack,varunarya10/devstack,vsham20/devstack,affo/devstack,wenhuizhang/devstack,Mahito/devstack,j4/devstack,Mahito/devstack,flavio-fernandes/devstack,prithivm/branch01,dirkmueller/devstack,parul24/devstack,group-policy/devstack,nati/devstack_public,noironetworks/devstack,group-policy/devstack,eharney/devstack,olivierlemasle/devstack,pczerkas/devstack,atulpatil301/devstack,dirkmueller/devstack,rushiagr/devstack,CiscoSystems/devstack,mc2014/devstack,thomasem/devstack,mssumanth/devstack,dtroyer/devstack,vishnugonela/devstack,costingalan/devstack,nttmcl/devstack_public,upadhyay-prashant/devstack,promptworks/devstack,tianweizhang/devstack,avvocatodemarchis/devstack,HPCHub/devstack,inkerra/devstack,virtualopensystems/devstack,sequenceiq/devstack,richliu/devstack,atulpatil301/devstack,vishnugonela/devstack,andrewrothstein/devstack,BSJAIN92/OpenStack,mmasaki/devstack,bigswitch/devstack,NaokiMiyata/devstack,mmasaki/devstack,liuquansheng47/devstack,mssumanth/devstack,eharney/devstack,kplus/devstack-moonshot,pombredanne/devstack,vsham20/devstack,Millnert/contrail-devstack,Juniper/devstack,prithivm/branch01,r-mibu/devstack,TwinkleChawla/devstack,pacinete/devstack,noironetworks/devstack,nati/devstack_public,pczerkas/devstack,savi-dev/devstack,j4/devstack,NaokiMiyata/devstack,deepakselvaraj/devstack,CloudServer/devstack,sequenceiq/devstack,ozamiatin/devstack,nawawi/openstack,ykaneko/devstack,sc68cal/devstack,bswartz/devstack,nawawi/openstack,pombredanne/devstack,promptworks/devstack,pacinete/devstack,eshnil2000/devstack,avvocatodemarchis/devstack,andrewrothstein/devstack,armando-migliaccio/devstack,cloudbuilders/devstack,dtroyer/devstack,yamt/devstack,nuxeh/devstack,jamielennox/devstack,nttmcl/devstack_public,srics/devstack,TwinkleChawla/devstack,neerja28/Devstack_GlusterFS,innodee/openstackk,nuxeh/devstack,herrsechs/devstack,williamthegrey/devstack,bljgaurav/openstack-test,kplus/devstack-moonshot,costingalan/devstack,wenhuizhang/devstack,varunarya10/devstack,affo/devstack,rushiagr/devstack,JioCloud/devstack,bswartz/devstack,mc2014/devstack,thomasem/devstack,samgoon/devstack,LoHChina/devstack,sstrato/devstack,flavio-fernandes/devstack,shootstar/devstacktest,citrix-openstack-build/devstack,openstack-dev/devstack,bq-xiao/devstack,savi-dev/devstack,liuquansheng47/devstack,neerja28/Devstack_GlusterFS,ykaneko/devstack,herrsechs/devstack,Yuriy-Leonov/devstack,ewindisch/raspi-devstack,CloudServer/devstack,ozamiatin/devstack,citrix-openstack-build/devstack,bigswitch/devstack,HPCHub/devstack,richliu/devstack,olivierlemasle/devstack,cloudbuilders/devstack,bq-xiao/devstack,upadhyay-prashant/devstack