Remove AIO metadata checksum workaround
Remove AIO metadata checksum workaround

The AIO metadata checksum workaround is now implemented
whenever the network interface starts by tooling in the
os_neutron role, so this less reliable implementation is
no longer required.

major/rpc-openstack,galstrom21/rpc-openstack,major/rpc-openstack,shannonmitchell/rpc-openstack,BjoernT/rpc-openstack,jacobwagner/rpc-openstack,robb-romans/rpc-openstack,cloudnull/rpc-openstack,prometheanfire/rpc-openstack,cloudnull/rpc-openstack,rcbops/rpc-openstack,robb-romans/rpc-openstack,BjoernT/rpc-openstack,hughsaunders/rpc-openstack,mancdaz/rpc-openstack,git-harry/rpc-openstack,mancdaz/rpc-openstack,git-harry/rpc-openstack,jacobwagner/rpc-openstack,shannonmitchell/rpc-openstack,hughsaunders/rpc-openstack,cfarquhar/rpc-openstack,rcbops/rpc-openstack,galstrom21/rpc-openstack,prometheanfire/rpc-openstack,cfarquhar/rpc-openstack