Remove deprecated NovaImages.list_images test scenario

According to https://review.openstack.org/#/c/605404
NovaImages.list_images scenario is deprecated

Change-Id: I73f9155b042486828226986009be20f1c02f1acf

nova/values.yaml

@@ -630,16 +630,6 @@ conf:
           sla:
             failure_rate:
               max: 0
-      NovaImages.list_images:
-        - args:
-            detailed: true
-          runner:
-            concurrency: 1
-            times: 1
-            type: constant
-          sla:
-            failure_rate:
-              max: 0
       NovaKeypair.create_and_delete_keypair:
         - runner:
             concurrency: 1

rally/values.yaml

@@ -11922,18 +11922,6 @@ conf:
           sla:
             failure_rate:
               max: 0
-      NovaImages.list_images:
-        -
-          args:
-            detailed: true
-          context:
-            users:
-              tenants: 3
-              users_per_tenant: 2
-          runner:
-            concurrency: 2
-            times: 10
-            type: constant
       NovaKeypair.boot_and_delete_server_with_keypair:
         -
           args: