header cleaning: don't include smp_lock.h when not used

Remove includes of <linux/smp_lock.h> where it is not used/needed.
Suggested by Al Viro.

Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc,
sparc64, and arm (all 59 defconfigs).

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

net/bridge/br_stp.c

@@ -13,7 +13,6 @@
  *	2 of the License, or (at your option) any later version.
  */
 #include <linux/kernel.h>
-#include <linux/smp_lock.h>
 
 #include "br_private.h"
 #include "br_private_stp.h"

net/bridge/br_stp_if.c

@@ -14,7 +14,6 @@
  */
 
 #include <linux/kernel.h>
-#include <linux/smp_lock.h>
 #include <linux/etherdevice.h>
 #include <linux/rtnetlink.h>
 

net/bridge/br_stp_timer.c

@@ -15,7 +15,6 @@
 
 #include <linux/kernel.h>
 #include <linux/times.h>
-#include <linux/smp_lock.h>
 
 #include "br_private.h"
 #include "br_private_stp.h"