restorer: drop sigframe include

It's included through "asm/restorer.h".
Signed-off-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

criu/include/restorer.h

@@ -17,7 +17,6 @@
 #include "posix-timer.h"
 #include "timerfd.h"
 #include "shmem.h"
-#include "sigframe.h"
 #include "parasite-vdso.h"
 
 #include <time.h>