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/sunrpc/timer.h b/libc/kernel/common/linux/sunrpc/timer.h
index 367e2f1..8fb78e5 100644
--- a/libc/kernel/common/linux/sunrpc/timer.h
+++ b/libc/kernel/common/linux/sunrpc/timer.h
@@ -7,24 +7,18 @@
  ***   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_SUNRPC_TIMER_H
 #define _LINUX_SUNRPC_TIMER_H
+
 #include <asm/atomic.h>
+
 struct rpc_rtt {
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long timeo;
  unsigned long srtt[5];
  unsigned long sdrtt[5];
  int ntimeouts[5];
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
+
 #endif