hw/xen: Remove unnecessary 'exec/cpu-common.h' header

Nothing requires definitions from "exec/cpu-common.h",
do not include this header.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Message-Id: <20241217151305.29196-2-philmd@linaro.org>

include/hw/xen/xen.h

@@ -24,8 +24,6 @@
 #define __XEN_INTERFACE_VERSION__ 0x00040e00
 #endif
 
-#include "exec/cpu-common.h"
-
 /* xen-machine.c */
 enum xen_mode {
     XEN_DISABLED = 0, /* xen support disabled (default) */