Remove leftover reference to old "flat file" mechanism in a comment.

The flat file mechanism was removed in PostgreSQL 9.0.

diff --git a/src/backend/access/transam/xact.c b/src/backend/access/transam/xact.c
index 942ef2aa15a02f137f3d8766f81be7186c8096a1..9a918c9b4e3f9c5added829fdf8c043d17b0c2bc 100644 (file)
--- a/src/backend/access/transam/xact.c
+++ b/src/backend/access/transam/xact.c
@@ -4928,8 +4928,7 @@ xact_redo_abort(xl_xact_abort *xlrec, TransactionId xid)
        ExpireTreeKnownAssignedTransactionIds(xid, xlrec->nsubxacts, sub_xids, max_xid);
 
        /*
-        * There are no flat files that need updating, nor invalidation
-        * messages to send or undo.
+        * There are no invalidation messages to send or undo.
         */
 
        /*