More cleanup of manipulations of hash indexes' hasho_flag field.

Not much point in defining test macros for the flag bits if we
don't use 'em.

Amit Kapila

src/backend/access/hash/hash.c

@@ -897,7 +897,7 @@ hashbucketcleanup(Relation rel, Bucket cur_bucket, Buffer bucket_buf,
 			 * flag.
 			 */
 			if (tuples_removed && *tuples_removed > 0 &&
-				opaque->hasho_flag & LH_PAGE_HAS_DEAD_TUPLES)
+				H_HAS_DEAD_TUPLES(opaque))
 			{
 				opaque->hasho_flag &= ~LH_PAGE_HAS_DEAD_TUPLES;
 				clear_dead_marking = true;