Fix busybox for tests to reduce dockerhub calls (#7571)

roles/download/defaults/main.yml

@@ -458,8 +458,6 @@ nodelocaldns_image_tag: "{{ nodelocaldns_version }}"
 dnsautoscaler_version: 1.8.3
 dnsautoscaler_image_repo: "{{ kube_image_repo }}/cpa/cluster-proportional-autoscaler-{{ image_arch }}"
 dnsautoscaler_image_tag: "{{ dnsautoscaler_version }}"
-test_image_repo: "{{ kube_image_repo }}/busybox"
-test_image_tag: latest
 
 registry_image_repo: "{{ docker_image_repo }}/library/registry"
 registry_image_tag: "2.7.1"
@@ -900,13 +898,6 @@ downloads:
     groups:
     - kube_control_plane
 
-  testbox:
-    enabled: false
-    container: true
-    repo: "{{ test_image_repo }}"
-    tag: "{{ test_image_tag }}"
-    sha256: "{{ testbox_digest_checksum|default(None) }}"
-
   helm:
     enabled: "{{ helm_enabled }}"
     file: true