[cli-reference] Remove Cue project

Cue project became an unofficial project.

https://review.openstack.org/#/c/324412/

Change-Id: I662956f2a39586bc8a30f5b842d787180c8aac9e

bin/doc-tools-update-cli-reference

@@ -62,7 +62,7 @@ fi
 # python-openstackclient has plugin interface.
 # It needs to install plugin packages
 # (i.e. python-ironicclient).
-osc_plugins=(barbican congress cue designate heat ironic ironic-inspector- sahara zaqar)
+osc_plugins=(barbican congress designate heat ironic ironic-inspector- sahara zaqar)
 if [[ $project == 'openstack' ]]; then
     # sahara misses oslo.log dependency.
     # This is fixed in git repository and can be removed again after

os_doc_tools/resources/clients.yaml

@@ -10,8 +10,6 @@ cloudkitty:
     name: Rating service
 congress:
     name: Governance service
-cue:
-    name: Message Broker service
 designate:
     name: DNS service
     subcommands: complete