Remove useless policy rules for v2.1 api which removed/disabled
Remove useless policy rules for v2.1 api which removed/disabled

Because V2.1 must be identical with V2 and must not contain any new
attributes and new method. So the swap/attach/deatch in extend_volume
was removed.  But there still left some policy rules related to it.
This patch cleanup them.

Change-Id: I6e7e3263261519f72fa6b067db6a5930026f02dd

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