sched: clean up the rt priority macros

clean up the rt priority macros, pointed out by Andrew Morton.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/kernel/exit.c b/kernel/exit.c
index 6c76992..8fd7acd7 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -290,7 +290,7 @@
 	/* Set the exit signal to SIGCHLD so we signal init on exit */
 	current->exit_signal = SIGCHLD;
 
-	if (!has_rt_policy(current) && (task_nice(current) < 0))
+	if (task_nice(current) < 0)
 		set_user_nice(current, 0);
 	/* cpus_allowed? */
 	/* rt_priority? */