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_addr.h b/libc/kernel/common/linux/if_addr.h
index 05517a2..9c1fa15 100644
--- a/libc/kernel/common/linux/if_addr.h
+++ b/libc/kernel/common/linux/if_addr.h
@@ -7,67 +7,58 @@
  ***   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_ADDR_H
 #define __LINUX_IF_ADDR_H
+
 #include <linux/types.h>
 #include <linux/netlink.h>
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+
 struct ifaddrmsg
 {
  __u8 ifa_family;
  __u8 ifa_prefixlen;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u8 ifa_flags;
  __u8 ifa_scope;
  __u32 ifa_index;
 };
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+
 enum
 {
  IFA_UNSPEC,
  IFA_ADDRESS,
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  IFA_LOCAL,
  IFA_LABEL,
  IFA_BROADCAST,
  IFA_ANYCAST,
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  IFA_CACHEINFO,
  IFA_MULTICAST,
  __IFA_MAX,
 };
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+
 #define IFA_MAX (__IFA_MAX - 1)
+
 #define IFA_F_SECONDARY 0x01
 #define IFA_F_TEMPORARY IFA_F_SECONDARY
+
 #define IFA_F_NODAD 0x02
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IFA_F_OPTIMISTIC 0x04
 #define IFA_F_DADFAILED 0x08
 #define IFA_F_HOMEADDRESS 0x10
 #define IFA_F_DEPRECATED 0x20
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IFA_F_TENTATIVE 0x40
 #define IFA_F_PERMANENT 0x80
+
 struct ifa_cacheinfo
 {
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u32 ifa_prefered;
  __u32 ifa_valid;
  __u32 cstamp;
  __u32 tstamp;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
+
 #define IFA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg))))
 #define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg))
+
 #endif
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */