Remove is_admin_context from sqlalchemy.api
Remove is_admin_context from sqlalchemy.api

is_admin_context was used to detect deprecated empty contexts,
and was last updated in 2010

Change-Id: I06c61d6a508bef7ea30054a6f1df3fe6b2d6dfd8

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