message: frontend: Remove RBAC_V1_ALPHA1 unused feature flag
diff: @@ -8,7 +8,6 @@ export const FLAGS = {
  AUTH_ENABLED: 'AUTH_ENABLED',
  CLUSTER_UPDATES: 'CLUSTER_UPDATES',
  RBAC: 'RBAC',
  - RBAC_V1_ALPHA1: 'RBAC_V1_ALPHA1',
  REVOKE_TOKEN: 'REVOKE_TOKEN',
  USER_MANAGEMENT: 'USER_MANAGEMENT',
  };
  @@ -17,7 +16,6 @@ const DEFAULTS = {
  [FLAGS.AUTH_ENABLED]: !window.SERVER_FLAGS.authDisabled,
  [FLAGS.CLUSTER_UPDATES]: undefined,
  [FLAGS.RBAC]: undefined,
  - [FLAGS.RBAC_V1_ALPHA1]: undefined,
  [FLAGS.REVOKE_TOKEN]: !!window.SERVER_FLAGS.kubectlClientID,
  [FLAGS.USER_MANAGEMENT]: undefined,
  };
  @@ -27,7 +25,6 @@ const setFlags = (dispatch, flags) => dispatch({flags, type: SET_FLAGS});
  const K8S_FLAGS = {
  [FLAGS.RBAC]: '/apis/rbac.authorization.k8s.io',
  - [FLAGS.RBAC_V1_ALPHA1]: '/apis/rbac.authorization.k8s.io/v1beta1',
  };
  const COREOS_FLAGS = {
  