uhci_fill_queue: zap debug printf

hw/usb-uhci.c

diff --git a/hw/usb-uhci.c b/hw/usb-uhci.c
index 2c6ed38..304b84b 100644
--- a/hw/usb-uhci.c
+++ b/hw/usb-uhci.c
@@ -951,7 +951,6 @@
     UHCI_TD ptd;
     int ret;
 
-    fprintf(stderr, "%s: -- %x\n", __func__, token);
     while (is_valid(plink)) {
         pci_dma_read(&s->dev, plink & ~0xf, &ptd, sizeof(ptd));
         le32_to_cpus(&ptd.link);