Remove redundant code from PowerVM driver
Remove redundant code from PowerVM driver

This patch removes the dead instance cleanup from the
init_host() method in the PowerVM driver. Not only do
I think that it's redundant with the rest of init_host()
in compute_manager(), it's also examining the instance
task_state, which I think is a layering violation.

Tangentially related to bp/no-db-compute

Change-Id: Ie7eb4c07caa162f32021ccdbed51db950d30e2c7

cloudbau/nova,mahak/nova,petrutlucian94/nova_dev,vladikr/nova_drafts,rahulunair/nova,devoid/nova,cyx1231st/nova,klmitch/nova,tealover/nova,tianweizhang/nova,cernops/nova,hanlind/nova,rahulunair/nova,yatinkumbhare/openstack-nova,devendermishrajio/nova,cernops/nova,jianghuaw/nova,sridevikoushik31/openstack,mikalstill/nova,noironetworks/nova,vmturbo/nova,citrix-openstack-build/nova,sridevikoushik31/openstack,CEG-FYP-OpenStack/scheduler,openstack/nova,houshengbo/nova_vmware_compute_driver,bgxavier/nova,apporc/nova,akash1808/nova,yosshy/nova,NeCTAR-RC/nova,watonyweng/nova,Juniper/nova,TieWei/nova,apporc/nova,varunarya10/nova_test_latest,sacharya/nova,joker946/nova,TwinkleChawla/nova,vladikr/nova_drafts,akash1808/nova,rickerc/nova_audit,barnsnake351/nova,double12gzh/nova,dims/nova,alvarolopez/nova,vmturbo/nova,TieWei/nova,viggates/nova,gooddata/openstack-nova,Tehsmash/nova,spring-week-topos/nova-week,Triv90/Nova,gspilio/nova,iuliat/nova,Juniper/nova,leilihh/novaha,maheshp/novatest,mandeepdhami/nova,Triv90/Nova,JianyuWang/nova,CloudServer/nova,shahar-stratoscale/nova,vmturbo/nova,OpenAcademy-OpenStack/nova-scheduler,Brocade-OpenSource/OpenStack-DNRM-Nova,devoid/nova,rickerc/nova_audit,shootstar/novatest,zhimin711/nova,felixma/nova,cloudbase/nova-virtualbox,badock/nova,imsplitbit/nova,spring-week-topos/nova-week,CiscoSystems/nova,joker946/nova,orbitfp7/nova,bigswitch/nova,BeyondTheClouds/nova,felixma/nova,bclau/nova,Metaswitch/calico-nova,zzicewind/nova,nikesh-mahalka/nova,mahak/nova,houshengbo/nova_vmware_compute_driver,hanlind/nova,aristanetworks/arista-ovs-nova,aristanetworks/arista-ovs-nova,luogangyi/bcec-nova,JioCloud/nova,leilihh/nova,redhat-openstack/nova,citrix-openstack-build/nova,aristanetworks/arista-ovs-nova,mmnelemane/nova,scripnichenko/nova,fnordahl/nova,JianyuWang/nova,phenoxim/nova,petrutlucian94/nova_dev,viggates/nova,gooddata/openstack-nova,jianghuaw/nova,affo/nova,OpenAcademy-OpenStack/nova-scheduler,dstroppa/openstack-smartos-nova-grizzly,devendermishrajio/nova_test_latest,eayunstack/nova,cloudbase/nova-virtualbox,j-carpentier/nova,openstack/nova,jeffrey4l/nova,adelina-t/nova,Yuriy-Leonov/nova,yrobla/nova,NeCTAR-RC/nova,varunarya10/nova_test_latest,Yusuke1987/openstack_template,bclau/nova,Brocade-OpenSource/OpenStack-DNRM-Nova,sebrandon1/nova,raildo/nova,cloudbau/nova,sridevikoushik31/nova,mgagne/nova,sebrandon1/nova,qwefi/nova,affo/nova,tangfeixiong/nova,badock/nova,zhimin711/nova,bgxavier/nova,maoy/zknova,yosshy/nova,CCI-MOC/nova,yrobla/nova,zaina/nova,maheshp/novatest,cloudbase/nova,mandeepdhami/nova,eonpatapon/nova,iuliat/nova,zzicewind/nova,Metaswitch/calico-nova,alaski/nova,Juniper/nova,DirectXMan12/nova-hacking,yatinkumbhare/openstack-nova,eharney/nova,orbitfp7/nova,LoHChina/nova,leilihh/novaha,sebrandon1/nova,sridevikoushik31/openstack,vmturbo/nova,dstroppa/openstack-smartos-nova-grizzly,edulramirez/nova,projectcalico/calico-nova,whitepages/nova,cernops/nova,j-carpentier/nova,CEG-FYP-OpenStack/scheduler,akash1808/nova_test_latest,JioCloud/nova_test_latest,blueboxgroup/nova,LoHChina/nova,mikalstill/nova,silenceli/nova,mikalstill/nova,JioCloud/nova_test_latest,maelnor/nova,cloudbase/nova,hanlind/nova,gooddata/openstack-nova,tealover/nova,saleemjaveds/https-github.com-openstack-nova,gooddata/openstack-nova,eonpatapon/nova,belmiromoreira/nova,watonyweng/nova,edulramirez/nova,rajalokan/nova,luogangyi/bcec-nova,tangfeixiong/nova,imsplitbit/nova,nikesh-mahalka/nova,petrutlucian94/nova,silenceli/nova,akash1808/nova_test_latest,alaski/nova,dims/nova,MountainWei/nova,BeyondTheClouds/nova,ted-gould/nova,adelina-t/nova,Triv90/Nova,qwefi/nova,double12gzh/nova,shail2810/nova,tanglei528/nova,gspilio/nova,maoy/zknova,rahulunair/nova,Francis-Liu/animated-broccoli,scripnichenko/nova,kimjaejoong/nova,berrange/nova,houshengbo/nova_vmware_compute_driver,fnordahl/nova,leilihh/nova,CCI-MOC/nova,DirectXMan12/nova-hacking,gspilio/nova,klmitch/nova,DirectXMan12/nova-hacking,projectcalico/calico-nova,rajalokan/nova,ntt-sic/nova,MountainWei/nova,redhat-openstack/nova,berrange/nova,bigswitch/nova,thomasem/nova,plumgrid/plumgrid-nova,jeffrey4l/nova,shahar-stratoscale/nova,phenoxim/nova,klmitch/nova,blueboxgroup/nova,raildo/nova,mgagne/nova,Stavitsky/nova,isyippee/nova,shail2810/nova,alexandrucoman/vbox-nova-driver,maelnor/nova,sridevikoushik31/nova,tanglei528/nova,isyippee/nova,fajoy/nova,openstack/nova,cyx1231st/nova,klmitch/nova,zaina/nova,devendermishrajio/nova,saleemjaveds/https-github.com-openstack-nova,shootstar/novatest,dstroppa/openstack-smartos-nova-grizzly,maoy/zknova,TwinkleChawla/nova,thomasem/nova,fajoy/nova,eayunstack/nova,rrader/nova-docker-plugin,Tehsmash/nova,alexandrucoman/vbox-nova-driver,yrobla/nova,takeshineshiro/nova,devendermishrajio/nova_test_latest,ntt-sic/nova,barnsnake351/nova,angdraug/nova,alvarolopez/nova,rajalokan/nova,tianweizhang/nova,jianghuaw/nova,angdraug/nova,sridevikoushik31/nova,tudorvio/nova,BeyondTheClouds/nova,plumgrid/plumgrid-nova,eharney/nova,CiscoSystems/nova,noironetworks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