vmware_cluster_facts does not set hosts key

Since https://github.com/ansible/ansible/pull/61006 `vmware_cluster_info`
exposes a new key called `hosts`. The deprecated module
`vmware_cluster_facts` keeps the previous behaviour, and so we must keep
its test-suite unchanged.

test/integration/targets/vmware_cluster_facts/tasks/main.yml

@@ -46,7 +46,6 @@
   assert:
     that:
         - cluster_result.clusters
-        - cluster_result.clusters[ccr1].hosts is defined
         - not cluster_result.changed
 
 - <<: *vc_cluster_data