Remove obsolete _bt_compare() comment.
btbuild() has nothing to say about how NULL values compare in nbtree.
Besides, there are _bt_compare() header comments that describe how NULL
values are handled.
@@ -601,7 +601,6 @@ _bt_compare(Relation rel,
datum = index_getattr(itup, scankey->sk_attno, itupdesc, &isNull);
- /* see comments about NULLs handling in btbuild */
if (scankey->sk_flags & SK_ISNULL) /* key is NULL */
{
if (isNull)
