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/futex.h b/libc/kernel/common/linux/futex.h
index 7630654..30f9e59 100644
--- a/libc/kernel/common/linux/futex.h
+++ b/libc/kernel/common/linux/futex.h
@@ -7,59 +7,55 @@
  ***   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_FUTEX_H
 #define _LINUX_FUTEX_H
+
 #include <linux/sched.h>
+
 #define FUTEX_WAIT 0
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define FUTEX_WAKE 1
 #define FUTEX_FD 2
 #define FUTEX_REQUEUE 3
 #define FUTEX_CMP_REQUEUE 4
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define FUTEX_WAKE_OP 5
 #define FUTEX_LOCK_PI 6
 #define FUTEX_UNLOCK_PI 7
 #define FUTEX_TRYLOCK_PI 8
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+
 struct robust_list {
  struct robust_list __user *next;
 };
+
 struct robust_list_head {
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+
  struct robust_list list;
+
  long futex_offset;
+
  struct robust_list __user *list_op_pending;
 };
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+
 #define FUTEX_WAITERS 0x80000000
+
 #define FUTEX_OWNER_DIED 0x40000000
+
 #define FUTEX_TID_MASK 0x3fffffff
+
 #define ROBUST_LIST_LIMIT 2048
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+
 #define FUTEX_OP_SET 0  
 #define FUTEX_OP_ADD 1  
 #define FUTEX_OP_OR 2  
 #define FUTEX_OP_ANDN 3  
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define FUTEX_OP_XOR 4  
 #define FUTEX_OP_OPARG_SHIFT 8  
 #define FUTEX_OP_CMP_EQ 0  
 #define FUTEX_OP_CMP_NE 1  
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define FUTEX_OP_CMP_LT 2  
 #define FUTEX_OP_CMP_LE 3  
 #define FUTEX_OP_CMP_GT 4  
 #define FUTEX_OP_CMP_GE 5  
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define FUTEX_OP(op, oparg, cmp, cmparg)   (((op & 0xf) << 28) | ((cmp & 0xf) << 24)   | ((oparg & 0xfff) << 12) | (cmparg & 0xfff))
 #endif