cmd/k8s-operator: remove Services feature flag detection

Now that the feature is in beta, no one should encounter this error.

Updates #cleanup

Change-Id: I69ed3f460b7f28c44da43ce2f552042f980a0420
Signed-off-by: Tom Proctor <tomhjp@users.noreply.github.com>

cmd/k8s-operator/svc-for-pg.go

@@ -207,11 +207,6 @@ func (r *HAServiceReconciler) maybeProvision(ctx context.Context, hostname strin
 	// already created and not owned by this Service.
 	serviceName := tailcfg.ServiceName("svc:" + hostname)
 	existingTSSvc, err := r.tsClient.GetVIPService(ctx, serviceName)
-	if isErrorFeatureFlagNotEnabled(err) {
-		logger.Warn(msgFeatureFlagNotEnabled)
-		r.recorder.Event(svc, corev1.EventTypeWarning, warningTailscaleServiceFeatureFlagNotEnabled, msgFeatureFlagNotEnabled)
-		return false, nil
-	}
 	if err != nil && !isErrorTailscaleServiceNotFound(err) {
 		return false, fmt.Errorf("error getting Tailscale Service %q: %w", hostname, err)
 	}
@@ -530,11 +525,6 @@ func (r *HAServiceReconciler) tailnetCertDomain(ctx context.Context) (string, er
 // It returns true if an existing Tailscale Service was updated to remove owner reference, as well as any error that occurred.
 func cleanupTailscaleService(ctx context.Context, tsClient tsClient, name tailcfg.ServiceName, operatorID string, logger *zap.SugaredLogger) (updated bool, err error) {
 	svc, err := tsClient.GetVIPService(ctx, name)
-	if isErrorFeatureFlagNotEnabled(err) {
-		msg := fmt.Sprintf("Unable to proceed with cleanup: %s.", msgFeatureFlagNotEnabled)
-		logger.Warn(msg)
-		return false, nil
-	}
 	if err != nil {
 		errResp := &tailscale.ErrResponse{}
 		ok := errors.As(err, errResp)