Remove unused PruneState member frz_conflict_horizon

c2a23dcf9e3af1c removed use of PruneState.frz_conflict_horizon but
neglected to actually remove the member. Do that now.

diff --git a/src/backend/access/heap/pruneheap.c b/src/backend/access/heap/pruneheap.c
index 8748fa882e9829863929cf491de7a1ed92062c80..6beeb6956e3e25fc861f463abd123b08c6c07c5c 100644 (file)
--- a/src/backend/access/heap/pruneheap.c
+++ b/src/backend/access/heap/pruneheap.c
@@ -114,13 +114,6 @@ typedef struct
         */
        HeapPageFreeze pagefrz;
 
-       /*
-        * The snapshot conflict horizon used when freezing tuples. The final
-        * snapshot conflict horizon for the record may be newer if pruning
-        * removes newer transaction IDs.
-        */
-       TransactionId frz_conflict_horizon;
-
        /*-------------------------------------------------------
         * Information about what was done
         *