Update glance-operator backend samples

As a followup of [1], we need to remove the unnecessary
openstack-operator kustomize patching.

[1] openstack-k8s-operators/openstack-operator#1130

Signed-off-by: Francesco Pantano <fpantano@redhat.com>

config/samples/backends/base/openstack/kustomization.yaml

@@ -2,12 +2,6 @@ resources:
   - https://raw.githubusercontent.com/openstack-k8s-operators/openstack-operator/main/config/samples/core_v1beta1_openstackcontrolplane_galera_network_isolation.yaml
 
 patches:
-  - target:
-      kind: OpenStackControlPlane
-      name: .*
-    patch: |-
-      - op: remove
-        path: /spec/glance/template/glanceAPIs/default/type
   - target:
       kind: OpenStackControlPlane
       name: .*