Please provide kubeconfig file for cluster to delete.
Delete a kubernetes cluster with one command

Usage:
  clusterctl delete cluster [flags]

Flags:
      --bootstrap-cluster-cleanup             Whether to cleanup the bootstrap cluster after bootstrap. (default true)
  -e, --bootstrap-cluster-kubeconfig string   Sets the bootstrap cluster to be an existing Kubernetes cluster.
      --bootstrap-flags strings               Command line flags to be passed to the chosen bootstrapper
      --bootstrap-type string                 The cluster bootstrapper to use. (default "none")
      --cluster string                        The name of the kubeconfig cluster to use
  -h, --help                                  help for cluster
  -n, --namespace string                      If present, the namespace scope for this CLI request
  -p, --provider-components string            A yaml file containing cluster api provider controllers and supporting objects, if empty the value is loaded from the cluster's configuration store.
      --user string                           The name of the kubeconfig user to use

Global Flags:
      --alsologtostderr                  log to standard error as well as files
      --kubeconfig string                Paths to a kubeconfig. Only required if out-of-cluster.
      --log-flush-frequency duration     Maximum number of seconds between log flushes (default 5s)
      --log_backtrace_at traceLocation   when logging hits line file:N, emit a stack trace (default :0)
      --log_dir string                   If non-empty, write log files in this directory
      --log_file string                  If non-empty, use this log file
      --logtostderr                      log to standard error instead of files (default true)
      --master --kubeconfig              (Deprecated: switch to --kubeconfig) The address of the Kubernetes API server. Overrides any value in kubeconfig. Only required if out-of-cluster.
      --skip_headers                     If true, avoid header prefixes in the log messages
      --stderrthreshold severity         logs at or above this threshold go to stderr (default 2)
  -v, --v Level                          log level for V logs
      --vmodule moduleSpec               comma-separated list of pattern=N settings for file-filtered logging
