Remove double inclusion of linux/capability.h

Remove the second inclusion of linux/capability.h, which has been
introduced with "[PATCH] move capable() to capability.h" (commit
c59ede7b)
Signed-off-by: Christian Heim <phreak@gentoo.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

kernel/sysctl.c

@@ -27,7 +27,6 @@
 #include <linux/capability.h>
 #include <linux/ctype.h>
 #include <linux/utsname.h>
-#include <linux/capability.h>
 #include <linux/smp_lock.h>
 #include <linux/fs.h>
 #include <linux/init.h>