sax admin: don't close the channel on kUnavailable errors.

PiperOrigin-RevId: 673467645
Change-Id: I10d861ca4582f26912f18754941856cc27624804

saxml/client/go/admin.go

@@ -120,27 +120,12 @@ func (a *Admin) getAdminClient(ctx context.Context) (pbgrpc.AdminClient, error)
 	return a.client, nil
 }
 
-func (a *Admin) poison() {
-	a.mu.Lock()
-	conn := a.conn
-	a.conn = nil
-	a.client = nil
-	a.mu.Unlock()
-
-	if conn != nil {
-		conn.Close()
-	}
-}
-
 func (a *Admin) retry(ctx context.Context, callback func(client pbgrpc.AdminClient) error) error {
 	action := func() error {
 		client, err := a.getAdminClient(ctx)
 		if err == nil {
 			err = callback(client)
 		}
-		if errors.AdminShouldPoison(err) {
-			a.poison()
-		}
 		return err
 	}
 	return retrier.Do(ctx, action, errors.AdminShouldRetry)