diff --git a/src/backend/access/transam/subtrans.c b/src/backend/access/transam/subtrans.c
index 7240454ca4..66d3548155 100644
--- a/src/backend/access/transam/subtrans.c
+++ b/src/backend/access/transam/subtrans.c
@@ -54,14 +54,6 @@
 #define TransactionIdToPage(xid) ((xid) / (TransactionId) SUBTRANS_XACTS_PER_PAGE)
 #define TransactionIdToEntry(xid) ((xid) % (TransactionId) SUBTRANS_XACTS_PER_PAGE)
 
-/*
- * Single-item cache for results of SubTransGetTopmostTransaction().  It's
- * worth having such a cache because we frequently find ourselves repeatedly
- * checking the same XID, for example when scanning a table just after a
- * bulk insert, update, or delete.
- */
-static TransactionId cachedFetchSubXid = InvalidTransactionId;
-static TransactionId cachedFetchTopmostXid = InvalidTransactionId;
 
 /*
  * Link to shared-memory data structures for SUBTRANS control
@@ -163,13 +155,6 @@ SubTransGetTopmostTransaction(TransactionId xid)
 	/* Can't ask about stuff that might not be around anymore */
 	Assert(TransactionIdFollowsOrEquals(xid, TransactionXmin));
 
-	/*
-	 * Before going to the subtrans log, check our single item cache to see if
-	 * we know the result from a previous/recent request.
-	 */
-	if (TransactionIdEquals(xid, cachedFetchSubXid))
-		return cachedFetchTopmostXid;
-
 	while (TransactionIdIsValid(parentXid))
 	{
 		previousXid = parentXid;
@@ -189,9 +174,6 @@ SubTransGetTopmostTransaction(TransactionId xid)
 
 	Assert(TransactionIdIsValid(previousXid));
 
-	cachedFetchSubXid = xid;
-	cachedFetchTopmostXid = previousXid;
-
 	return previousXid;
 }