hw/input/ps2.c: Remove remnants of printf debug

In commit 5edab03d we added tracepoints to the ps2 keyboard
and mouse emulation. However we didn't remove all the debug-by-printf
support. In fact there is only one printf() remaining, and it is
redundant with the trace_ps2_write_mouse() event next to it.
Remove the printf() and the now-unused DEBUG* macros.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Message-id: 20201101133258.4240-1-peter.maydell@linaro.org

hw/input/ps2.c

@@ -33,12 +33,6 @@
 
 #include "trace.h"
 
-/* debug PC keyboard */
-//#define DEBUG_KBD
-
-/* debug PC keyboard : only mouse */
-//#define DEBUG_MOUSE
-
 /* Keyboard Commands */
 #define KBD_CMD_SET_LEDS	0xED	/* Set keyboard leds */
 #define KBD_CMD_ECHO     	0xEE
@@ -790,9 +784,6 @@ void ps2_write_mouse(void *opaque, int val)
     PS2MouseState *s = (PS2MouseState *)opaque;
 
     trace_ps2_write_mouse(opaque, val);
-#ifdef DEBUG_MOUSE
-    printf("kbd: write mouse 0x%02x\n", val);
-#endif
     switch(s->common.write_cmd) {
     default:
     case -1: