softmmu/cpu-timers: Remove unused 'exec/exec-all.h' header

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220207075426.81934-16-f4bug@amsat.org>
diff --git a/softmmu/cpu-timers.c b/softmmu/cpu-timers.c
index 34ddfa0..204d946 100644
--- a/softmmu/cpu-timers.c
+++ b/softmmu/cpu-timers.c
@@ -28,7 +28,6 @@
 #include "migration/vmstate.h"
 #include "qapi/error.h"
 #include "qemu/error-report.h"
-#include "exec/exec-all.h"
 #include "sysemu/cpus.h"
 #include "qemu/main-loop.h"
 #include "qemu/option.h"