remove the osbs-client role from koji-hub in staging, not needed anymore

Signed-off-by: Adam Miller <admiller@redhat.com>

playbooks/groups/koji-hub.yml

@@ -31,36 +31,6 @@
   - apache
   - fedmsg/base
   - koji_hub
-  - {
-      role: osbs-client,
-        when: env == 'staging',
-        general: {
-          verbose: 0,
-          build_json_dir: '/usr/share/osbs/',
-          openshift_required_version: 1.1.0,
-        },
-        default: {
-          username: "{{ osbs_koji_stg_username }}",
-          password: "{{ osbs_koji_stg_password }}",
-          koji_certs_secret: "koji",
-          openshift_url: 'https://{{ osbs_url }}/',
-          registry_uri: 'https://{{ docker_registry }}/v2',
-          source_registry_uri: 'https://{{ source_registry }}/v2',
-          build_host: '{{ osbs_url }}',
-          koji_root: 'http://{{ koji_root }}',
-          koji_hub: 'https://koji.stg.fedoraproject.org/kojihub',
-          sources_command: 'fedpkg sources',
-          build_type: 'prod',
-          authoritative_registry: 'registry.example.com',
-          vendor: 'Fedora Project',
-          verify_ssl: false,
-          use_auth: true,
-          builder_use_auth: true,
-          distribution_scope: 'private',
-          registry_api_versions: 'v2',
-          builder_openshift_url: 'https://{{osbs_url}}'
-        }
-    }
   - {
       role: osbs-client,
         when: env != 'staging',