- Get rid of extra include file, erroneously added by the

previous commit. This include file was required by the
  first version of the patch.

Approved by:	kib (mentor, implicit)

sys/arm/at91/at91_pmc.c

@@ -31,7 +31,6 @@ __FBSDID("$FreeBSD$");
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/kernel.h>
-#include <sys/limits.h>
 #include <sys/module.h>
 #include <sys/time.h>
 #include <sys/bus.h>