chore: Drop vendored document fragments

Drop the vendored document fragments from kubernetes.core to slightly
enhance the documented options and to allow changing the license of the
collection.

Signed-off-by: Felix Matouschek <fmatouschek@redhat.com>

plugins/modules/kubevirt_vm_info.py

@@ -22,6 +22,9 @@ description:
   - Authenticate using either a config file, certificates, password or token.
   - Supports check mode.
 
+extends_documentation_fragment:
+  - kubevirt.core.kubevirt_auth_options
+
 options:
   api_version:
     description:
@@ -72,9 +75,6 @@ options:
     default: 120
     type: int
 
-extends_documentation_fragment:
-  - kubevirt.core.k8s_auth_options
-
 requirements:
   - "python >= 3.9"
   - "kubernetes >= 28.1.0"