[ci] Remove NovaSecGroup scenarios from rally-ci

These scenarios are not longer available, so we do not need to try
launch them.

Change-Id: I50eec6a90999b13dce9e61cfc22437c58c82f922

rally-jobs/rally-mos.yaml

@@ -467,78 +467,6 @@
         failure_rate:
           max: 0
 
-  NovaSecGroup.create_and_delete_secgroups:
-    -
-      args:
-        security_group_count: 5
-        rules_per_security_group: 5
-      runner:
-        type: "constant"
-        times: 1
-        concurrency: 1
-      context:
-        users:
-          tenants: 1
-          users_per_tenant: 1
-        quotas:
-          nova:
-            security_groups: -1
-            security_group_rules: -1
-      sla:
-        failure_rate:
-          max: 0
-
-  NovaSecGroup.create_and_list_secgroups:
-    -
-      args:
-        security_group_count: 5
-        rules_per_security_group: 5
-      runner:
-        type: "constant"
-        times: 1
-        concurrency: 1
-      context:
-        users:
-          tenants: 1
-          users_per_tenant: 1
-        quotas:
-          nova:
-            security_groups: -1
-            security_group_rules: -1
-      sla:
-        failure_rate:
-          max: 0
-
-
-  NovaSecGroup.boot_and_delete_server_with_secgroups:
-    -
-      args:
-        flavor:
-          name: "m1.tiny"
-        image:
-          name: "TestVM|cirros.*uec"
-        security_group_count: 5
-        rules_per_security_group: 5
-      runner:
-        type: "constant"
-        times: 1
-        concurrency: 1
-      context:
-        users:
-          tenants: 1
-          users_per_tenant: 1
-        network:
-          start_cidr: "10.2.0.0/24"
-        quotas:
-          nova:
-            security_groups: -1
-            security_group_rules: -1
-      sla:
-        failure_rate:
-          max: 0
-
-
-
   NeutronNetworks.create_and_list_networks:
     -
       args: