hw/timer/pxa2xx_timer: Remove use of pxa.h header

pxa2xx_timer includes pxa.h, but it doesn't actually make
use of any of the #defines, function prototypes or structs
defined there. Remove the unnecessary include (we will
shortly be removing the whole header file).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20240903160751.4100218-15-peter.maydell@linaro.org

hw/timer/pxa2xx_timer.c

@@ -12,7 +12,6 @@
 #include "hw/qdev-properties.h"
 #include "qemu/timer.h"
 #include "sysemu/runstate.h"
-#include "hw/arm/pxa.h"
 #include "hw/sysbus.h"
 #include "migration/vmstate.h"
 #include "qemu/log.h"