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/asm-generic/ipc.h b/libc/kernel/common/asm-generic/ipc.h
index a3ba44e..57657a7 100644
--- a/libc/kernel/common/asm-generic/ipc.h
+++ b/libc/kernel/common/asm-generic/ipc.h
@@ -7,38 +7,31 @@
  ***   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 _ASM_GENERIC_IPC_H
 #define _ASM_GENERIC_IPC_H
+
 struct ipc_kludge {
  struct msgbuf __user *msgp;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long msgtyp;
 };
+
 #define SEMOP 1
 #define SEMGET 2
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SEMCTL 3
 #define SEMTIMEDOP 4
 #define MSGSND 11
 #define MSGRCV 12
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MSGGET 13
 #define MSGCTL 14
 #define SHMAT 21
 #define SHMDT 22
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SHMGET 23
 #define SHMCTL 24
+
 #define DIPC 25
+
 #define IPCCALL(version,op) ((version)<<16 | (op))
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+
 #endif