Remove wsgiref from requirements.
Remove wsgiref from requirements.

Not referenced in code

Change-Id: I13c63abbbe7fb7e206a78bffc2ade06aebad44b8

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