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/hdlc/ioctl.h b/libc/kernel/common/linux/hdlc/ioctl.h
index ad1442c..c15a67f 100644
--- a/libc/kernel/common/linux/hdlc/ioctl.h
+++ b/libc/kernel/common/linux/hdlc/ioctl.h
@@ -7,59 +7,51 @@
  ***   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 __HDLC_IOCTL_H__
 #define __HDLC_IOCTL_H__
+
 typedef struct {
  unsigned int clock_rate;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned int clock_type;
  unsigned short loopback;
 } sync_serial_settings;
+
 typedef struct {
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned int clock_rate;
  unsigned int clock_type;
  unsigned short loopback;
  unsigned int slot_map;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 } te1_settings;
+
 typedef struct {
  unsigned short encoding;
  unsigned short parity;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 } raw_hdlc_proto;
+
 typedef struct {
  unsigned int t391;
  unsigned int t392;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned int n391;
  unsigned int n392;
  unsigned int n393;
  unsigned short lmi;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned short dce;
 } fr_proto;
+
 typedef struct {
  unsigned int dlci;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 } fr_proto_pvc;
+
 typedef struct {
  unsigned int dlci;
  char master[IFNAMSIZ];
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 }fr_proto_pvc_info;
+
 typedef struct {
  unsigned int interval;
  unsigned int timeout;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 } cisco_proto;
+
 #endif