uhci: remove useless DEBUG

commit 50dcc0f8 (uhci: tracing support) had removed
DPRINTF, the DEBUG marco is useless now, remove it.

Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

hw/usb/hcd-uhci.c

@@ -35,9 +35,6 @@
 #include "trace.h"
 #include "qemu/main-loop.h"
 
-//#define DEBUG
-//#define DEBUG_DUMP_DATA
-
 #define FRAME_TIMER_FREQ 1000
 
 #define FRAME_MAX_LOOPS  256