Remove unused touch command filter
Remove unused touch command filter

Looks like the touch command hasn't been used in
nova/virt/disk/api.py since folsom.  It also doesn't appear to be
used anywhere else within the Nova codebase.

Change-Id: I322a9eeee291ed9cd45e4dc71fa7ac65f6cc9b69

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