arch: tile: mm: pgtable.c: Removed duplicated #include

Signed-off-by: NAndrea Gelmini <andrea.gelmini@gelma.net>
Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>

arch/tile/mm/pgtable.c

@@ -17,7 +17,6 @@
 #include <linux/errno.h>
 #include <linux/mm.h>
 #include <linux/swap.h>
-#include <linux/smp.h>
 #include <linux/highmem.h>
 #include <linux/slab.h>
 #include <linux/pagemap.h>