Remove unused function
Remove unused function

trigger_provider_fw_rules_refresh function is not used in
nova/compute/api.py, remove it.

Change-Id: I01cbd17f710fca4e3dda38f2827073541524ac56

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