libvirt: remove pointless class in util test suite
libvirt: remove pointless class in util test suite

The test_utils.py module had two separate test classes defined
for no real benefit. This is left over from merging tests from
two separate files together.

Change-Id: I808719955f90f7333aecbb9f3a1e19a377553edf

takeshineshiro/nova,CloudServer/nova,yatinkumbhare/openstack-nova,Tehsmash/nova,JioCloud/nova,jianghuaw/nova,BeyondTheClouds/nova,orbitfp7/nova,j-carpentier/nova,adelina-t/nova,dims/nova,klmitch/nova,mgagne/nova,takeshineshiro/nova,maelnor/nova,phenoxim/nova,dims/nova,klmitch/nova,gooddata/openstack-nova,cyx1231st/nova,Stavitsky/nova,badock/nova,tealover/nova,alvarolopez/nova,yosshy/nova,akash1808/nova_test_latest,tangfeixiong/nova,scripnichenko/nova,akash1808/nova,zzicewind/nova,noironetworks/nova,isyippee/nova,gooddata/openstack-nova,ted-gould/nova,openstack/nova,alaski/nova,alvarolopez/nova,jianghuaw/nova,thomasem/nova,edulramirez/nova,varunarya10/nova_test_latest,mahak/nova,cloudbase/nova,hanlind/nova,mmnelemane/nova,bgxavier/nova,rajalokan/nova,mikalstill/nova,vmturbo/nova,tealover/nova,isyippee/nova,belmiromoreira/nova,Tehsmash/nova,kimjaejoong/nova,tudorvio/nova,phenoxim/nova,double12gzh/nova,belmiromoreira/nova,rajalokan/nova,affo/nova,eayunstack/nova,badock/nova,whitepages/nova,JioCloud/nova_test_latest,klmitch/nova,fnordahl/nova,watonyweng/nova,Metaswitch/calico-nova,hanlind/nova,ruslanloman/nova,maelnor/nova,NeCTAR-RC/nova,gooddata/openstack-nova,rajalokan/nova,zhimin711/nova,JioCloud/nova_test_latest,tudorvio/nova,nikesh-mahalka/nova,cloudbase/nova-virtualbox,yosshy/nova,devendermishrajio/nova_test_latest,cloudbase/nova,Metaswitch/calico-nova,vmturbo/nova,barnsnake351/nova,openstack/nova,berrange/nova,felixma/nova,openstack/nova,JioCloud/nova,LoHChina/nova,JianyuWang/nova,yatinkumbhare/openstack-nova,redhat-openstack/nova,petrutlucian94/nova,affo/nova,akash1808/nova,jianghuaw/nova,whitepages/nova,Francis-Liu/animated-broccoli,jianghuaw/nova,bgxavier/nova,sebrandon1/nova,CCI-MOC/nova,Juniper/nova,Juniper/nova,j-carpentier/nova,CEG-FYP-OpenStack/scheduler,zaina/nova,vladikr/nova_drafts,eayunstack/nova,Francis-Liu/animated-broccoli,alexandrucoman/vbox-nova-driver,vmturbo/nova,adelina-t/nova,raildo/nova,jeffrey4l/nova,cloudbase/nova-virtualbox,cloudbase/nova,fnordahl/nova,ruslanloman/nova,shail2810/nova,cernops/nova,CCI-MOC/nova,MountainWei/nova,devendermishrajio/nova,dawnpower/nova,eonpatapon/nova,BeyondTheClouds/nova,apporc/nova,mikalstill/nova,CEG-FYP-OpenStack/scheduler,bigswitch/nova,eonpatapon/nova,noironetworks/nova,mandeepdhami/nova,cernops/nova,felixma/nova,redhat-openstack/nova,thomasem/nova,iuliat/nova,mahak/nova,watonyweng/nova,alexandrucoman/vbox-nova-driver,klmitch/nova,jeffrey4l/nova,rahulunair/nova,zaina/nova,BeyondTheClouds/nova,akash1808/nova_test_latest,barnsnake351/nova,sebrandon1/nova,orbitfp7/nova,mahak/nova,zzicewind/nova,ted-gould/nova,bigswitch/nova,TwinkleChawla/nova,mmnelemane/nova,petrutlucian94/nova,iuliat/nova,blueboxgroup/nova,Yusuke1987/openstack_template,mgagne/nova,rahulunair/nova,apporc/nova,Yusuke1987/openstack_template,silenceli/nova,angdraug/nova,TwinkleChawla/nova,devendermishrajio/nova,raildo/nova,JianyuWang/nova,hanlind/nova,vmturbo/nova,cernops/nova,dawnpower/nova,cyx1231st/nova,MountainWei/nova,tianweizhang/nova,LoHChina/nova,projectcalico/calico-nova,shail2810/nova,Juniper/nova,edulramirez/nova,zhimin711/nova,varunarya10/nova_test_latest,tianweizhang/nova,Juniper/nova,sebrandon1/nova,CloudServer/nova,NeCTAR-RC/nova,alaski/nova,kimjaejoong/nova,devendermishrajio/nova_test_latest,mikalstill/nova,silenceli/nova,rajalokan/nova,nikesh-mahalka/nova,vladikr/nova_drafts,mandeepdhami/nova,joker946/nova,angdraug/nova,tangfeixiong/nova,scripnichenko/nova,projectcalico/calico-nova,gooddata/openstack-nova,blueboxgroup/nova,berrange/nova,rahulunair/nova,double12gzh/nova,Stavitsky/nova,joker946/nova