signals: kill force_sig_specific()

Kill force_sig_specific(), this trivial wrapper has no callers.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Roland McGrath <roland@redhat.com>
Cc: Sukadev Bhattiprolu <sukadev@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 57b3516..244c287 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -2083,7 +2083,6 @@
 extern int do_notify_parent(struct task_struct *, int);
 extern void __wake_up_parent(struct task_struct *p, struct task_struct *parent);
 extern void force_sig(int, struct task_struct *);
-extern void force_sig_specific(int, struct task_struct *);
 extern int send_sig(int, struct task_struct *, int);
 extern void zap_other_threads(struct task_struct *p);
 extern struct sigqueue *sigqueue_alloc(void);
diff --git a/kernel/signal.c b/kernel/signal.c
index d7c7f3c..4a9d763 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1062,12 +1062,6 @@
 	return ret;
 }
 
-void
-force_sig_specific(int sig, struct task_struct *t)
-{
-	force_sig_info(sig, SEND_SIG_FORCED, t);
-}
-
 /*
  * Nuke all other threads in the group.
  */