[PATCH rc2-mm1] remove unneeded SI_TIMER checks

[Oleg Nesterov <oleg@tv-sign.ru>]

Depends on "cleanup the usage of SEND_SIG_xxx constants"
patch in the rc2-mm1 tree, filename is
	cleanup-the-usage-of-send_sig_xxx-constants.patch

This patch removes checks for ->si_code == SI_TIMER from
send_signal, specific_send_sig_info, __group_send_sig_info.

I think posix-timers.c used these functions some time ago,
now it sends signals via send_{,group_}sigqueue, so these
hooks are unneeded.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>

--- 2.6.14-rc2/kernel/signal.c~2_TIMER	2005-09-24 18:33:51.000000000 +0400
+++ 2.6.14-rc2/kernel/signal.c	2005-09-24 18:47:16.000000000 +0400
@@ -840,12 +840,6 @@ static int send_signal(int sig, struct s
 		 * and sent by user using something other than kill().
 		 */
 			return -EAGAIN;
-		if (info->si_code == SI_TIMER)
-			/*
-			 * Set up a return to indicate that we dropped 
-			 * the signal.
-			 */
-			ret = info->si_sys_private;
 	}
 
 out_set:
@@ -866,12 +860,6 @@ specific_send_sig_info(int sig, struct s
 		BUG();
 	assert_spin_locked(&t->sighand->siglock);
 
-	if (!is_si_special(info) && (info->si_code == SI_TIMER))
-		/*
-		 * Set up a return to indicate that we dropped the signal.
-		 */
-		ret = info->si_sys_private;
-
 	/* Short-circuit ignored signals.  */
 	if (sig_ignored(t, sig))
 		goto out;
@@ -1061,12 +1049,6 @@ __group_send_sig_info(int sig, struct si
 	assert_spin_locked(&p->sighand->siglock);
 	handle_stop_signal(sig, p);
 
-	if (!is_si_special(info) && (info->si_code == SI_TIMER))
-		/*
-		 * Set up a return to indicate that we dropped the signal.
-		 */
-		ret = info->si_sys_private;
-
 	/* Short-circuit ignored signals.  */
 	if (sig_ignored(p, sig))
 		return ret;