Revert "Update bionic kernel headers using update_all.py"

This reverts commit 94a85f663694e1869acb1c2e8a3c374a6fa3ab86

There is a smoke test failure for Prime but Crespo/Stingray are fine. Will revert the change for now until further investigation is made.
diff --git a/libc/kernel/common/linux/spinlock_up.h b/libc/kernel/common/linux/spinlock_up.h
index 1b0294b..b4958dc 100644
--- a/libc/kernel/common/linux/spinlock_up.h
+++ b/libc/kernel/common/linux/spinlock_up.h
@@ -7,28 +7,24 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
- ***   To edit the content of this header, modify the corresponding
- ***   source file (e.g. under external/kernel-headers/original/) then
- ***   run bionic/libc/kernel/tools/update_all.py
- ***
- ***   Any manual change here will be lost the next time this script will
- ***   be run. You've been warned!
- ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef __LINUX_SPINLOCK_UP_H
 #define __LINUX_SPINLOCK_UP_H
+
 #ifndef __LINUX_SPINLOCK_H
 #error "please don't include this file directly"
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
+
 #define __raw_spin_is_locked(lock) ((void)(lock), 0)
+
 #define __raw_spin_lock(lock) do { (void)(lock); } while (0)
 #define __raw_spin_unlock(lock) do { (void)(lock); } while (0)
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __raw_spin_trylock(lock) ({ (void)(lock); 1; })
+
 #define __raw_read_can_lock(lock) (((void)(lock), 1))
 #define __raw_write_can_lock(lock) (((void)(lock), 1))
+
 #define __raw_spin_unlock_wait(lock)   do { cpu_relax(); } while (__raw_spin_is_locked(lock))
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+
 #endif