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/if_arcnet.h b/libc/kernel/common/linux/if_arcnet.h
index ef16fda..a1ad877 100644
--- a/libc/kernel/common/linux/if_arcnet.h
+++ b/libc/kernel/common/linux/if_arcnet.h
@@ -7,97 +7,88 @@
  ***   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_IF_ARCNET_H
 #define _LINUX_IF_ARCNET_H
+
 #include <linux/if_ether.h>
+
 #define ARC_P_IP 212  
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ARC_P_IPV6 196  
 #define ARC_P_ARP 213  
 #define ARC_P_RARP 214  
 #define ARC_P_IPX 250  
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ARC_P_NOVELL_EC 236  
+
 #define ARC_P_IP_RFC1051 240  
 #define ARC_P_ARP_RFC1051 241  
+
 #define ARC_P_ETHER 232  
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+
 #define ARC_P_DATAPOINT_BOOT 0  
 #define ARC_P_DATAPOINT_MOUNT 1
 #define ARC_P_POWERLAN_BEACON 8  
 #define ARC_P_POWERLAN_BEACON2 243  
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ARC_P_LANSOFT 251  
 #define ARC_P_ATALK 0xDD
+
 #define ARCNET_ALEN 1
+
 struct arc_rfc1201
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 {
  uint8_t proto;
  uint8_t split_flag;
  uint16_t sequence;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  uint8_t payload[0];
 };
 #define RFC1201_HDR_SIZE 4
+
 struct arc_rfc1051
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 {
  uint8_t proto;
  uint8_t payload[0];
 };
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define RFC1051_HDR_SIZE 1
+
 struct arc_eth_encap
 {
  uint8_t proto;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct ethhdr eth;
  uint8_t payload[0];
 };
 #define ETH_ENCAP_HDR_SIZE 14
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+
 struct arc_cap
 {
  uint8_t proto;
  uint8_t cookie[sizeof(int)];
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  union {
  uint8_t ack;
  uint8_t raw[0];
  } mes;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
+
 struct arc_hardware
 {
  uint8_t source,
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  dest,
  offset[2];
 };
 #define ARC_HDR_SIZE 4
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+
 struct archdr
 {
+
  struct arc_hardware hard;
+
  union {
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct arc_rfc1201 rfc1201;
  struct arc_rfc1051 rfc1051;
  struct arc_eth_encap eth_encap;
  struct arc_cap cap;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  uint8_t raw[0];
  } soft;
 };
+
 #endif
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */