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/nfsd/export.h b/libc/kernel/common/linux/nfsd/export.h
index 7bb5774..932274f 100644
--- a/libc/kernel/common/linux/nfsd/export.h
+++ b/libc/kernel/common/linux/nfsd/export.h
@@ -7,38 +7,32 @@
  ***   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 NFSD_EXPORT_H
 #define NFSD_EXPORT_H
+
 #include <asm/types.h>
+
 #define NFSCLNT_IDMAX 1024
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NFSCLNT_ADDRMAX 16
 #define NFSCLNT_KEYMAX 32
+
 #define NFSEXP_READONLY 0x0001
 #define NFSEXP_INSECURE_PORT 0x0002
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NFSEXP_ROOTSQUASH 0x0004
 #define NFSEXP_ALLSQUASH 0x0008
 #define NFSEXP_ASYNC 0x0010
 #define NFSEXP_GATHERED_WRITES 0x0020
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+
 #define NFSEXP_NOHIDE 0x0200
 #define NFSEXP_NOSUBTREECHECK 0x0400
 #define NFSEXP_NOAUTHNLM 0x0800  
 #define NFSEXP_MSNFS 0x1000  
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NFSEXP_FSID 0x2000
 #define NFSEXP_CROSSMOUNT 0x4000
 #define NFSEXP_NOACL 0x8000  
 #define NFSEXP_ALLFLAGS 0xFE3F
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+
 #endif
+