The porting of mistral-dashboard is complete.
This fullfills the community goal "Remove Use of mox/mox3 for Testing"
set for Rocky: https://governance.openstack.org/tc/goals/rocky/mox_removal.html
Remove use_mox and remove dead code.
Change-Id: I59839fecd85caaf8b81129b7f890c4ed50d39db8
Signed-off-by: Chuck Short <chucks@redhat.com>