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/irqflags.h b/libc/kernel/common/linux/irqflags.h
index af3aee9..1bf3f90 100644
--- a/libc/kernel/common/linux/irqflags.h
+++ b/libc/kernel/common/linux/irqflags.h
@@ -7,37 +7,28 @@
  ***   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_TRACE_IRQFLAGS_H
 #define _LINUX_TRACE_IRQFLAGS_H
+
 #define trace_hardirqs_on() do { } while (0)
 #define trace_hardirqs_off() do { } while (0)
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define trace_softirqs_on(ip) do { } while (0)
 #define trace_softirqs_off(ip) do { } while (0)
 #define trace_hardirq_context(p) 0
 #define trace_softirq_context(p) 0
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define trace_hardirqs_enabled(p) 0
 #define trace_softirqs_enabled(p) 0
 #define trace_hardirq_enter() do { } while (0)
 #define trace_hardirq_exit() do { } while (0)
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define trace_softirq_enter() do { } while (0)
 #define trace_softirq_exit() do { } while (0)
 #define INIT_TRACE_IRQFLAGS
+
 #define raw_local_irq_disable() local_irq_disable()
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define raw_local_irq_enable() local_irq_enable()
 #define raw_local_irq_save(flags) local_irq_save(flags)
 #define raw_local_irq_restore(flags) local_irq_restore(flags)
+
 #endif
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */