Revert "mm: Subtract watermark boost from /proc/vmstat"

This reverts commit 899ed3fcc43853735460df0531885a776c33c4a2.
An increase in atomic allocation failures was seen after this
change.

Change-Id: Ibe47253711be1a3796ff94431e553144a65cf9b4
Signed-off-by: Patrick Daly <pdaly@codeaurora.org>
diff --git a/mm/vmstat.c b/mm/vmstat.c
index fd1d172..dc2287c 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -1568,9 +1568,9 @@
 		   "\n        present  %lu"
 		   "\n        managed  %lu",
 		   zone_page_state(zone, NR_FREE_PAGES),
-		   min_wmark_pages(zone) - zone->watermark_boost,
-		   low_wmark_pages(zone) - zone->watermark_boost,
-		   high_wmark_pages(zone) - zone->watermark_boost,
+		   min_wmark_pages(zone),
+		   low_wmark_pages(zone),
+		   high_wmark_pages(zone),
 		   zone->spanned_pages,
 		   zone->present_pages,
 		   zone->managed_pages);