sched/headers: Remove duplicate header inclusions

<linux/psi.h> and "autogroup.h" are included twice, remove the duplicate header
inclusion.
Signed-off-by: Yu Liao <liaoyu15@huawei.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230802021501.2511569-1-liaoyu15@huawei.com

kernel/sched/build_utility.c

@@ -34,7 +34,6 @@
 #include <linux/nospec.h>
 #include <linux/proc_fs.h>
 #include <linux/psi.h>
-#include <linux/psi.h>
 #include <linux/ptrace_api.h>
 #include <linux/sched_clock.h>
 #include <linux/security.h>

kernel/sched/core.c

@@ -85,7 +85,6 @@
 
 #include "sched.h"
 #include "stats.h"
-#include "autogroup.h"
 
 #include "autogroup.h"
 #include "pelt.h"