git: Remove some no longer used externs in various system headers.

[Sascha Wildner]

commit 29d98cc22d7c5605390d6cd6fee1edc175980311
Author: Sascha Wildner <saw at online.de>
Date:   Tue Jul 23 18:54:20 2013 +0200

    Remove some no longer used externs in various system headers.

Summary of changes:
 sys/sys/dmap.h   | 4 +---
 sys/sys/kernel.h | 2 --
 sys/sys/thread.h | 2 --
 3 files changed, 1 insertion(+), 7 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/29d98cc22d7c5605390d6cd6fee1edc175980311


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