diff --git a/src/backend/utils/cache/relcache.c b/src/backend/utils/cache/relcache.c
index 204e1eb7aad..e8d11a1d0ee 100644
--- a/src/backend/utils/cache/relcache.c
+++ b/src/backend/utils/cache/relcache.c
@@ -5941,48 +5941,6 @@ RelationIdIsInInitFile(Oid relationId)
 	return RelationSupportsSysCache(relationId);
 }
 
-/*
- * Tells whether any index for the relation is unlogged.
- *
- * Note: There doesn't seem to be any way to have an unlogged index attached
- * to a permanent table, but it seems best to keep this general so that it
- * returns sensible results even when they seem obvious (like for an unlogged
- * table) and to handle possible future unlogged indexes on permanent tables.
- */
-bool
-RelationHasUnloggedIndex(Relation rel)
-{
-	List	   *indexoidlist;
-	ListCell   *indexoidscan;
-	bool		result = false;
-
-	indexoidlist = RelationGetIndexList(rel);
-
-	foreach(indexoidscan, indexoidlist)
-	{
-		Oid			indexoid = lfirst_oid(indexoidscan);
-		HeapTuple	tp;
-		Form_pg_class reltup;
-
-		tp = SearchSysCache1(RELOID, ObjectIdGetDatum(indexoid));
-		if (!HeapTupleIsValid(tp))
-			elog(ERROR, "cache lookup failed for relation %u", indexoid);
-		reltup = (Form_pg_class) GETSTRUCT(tp);
-
-		if (reltup->relpersistence == RELPERSISTENCE_UNLOGGED)
-			result = true;
-
-		ReleaseSysCache(tp);
-
-		if (result == true)
-			break;
-	}
-
-	list_free(indexoidlist);
-
-	return result;
-}
-
 /*
  * Invalidate (remove) the init file during commit of a transaction that
  * changed one or more of the relation cache entries that are kept in the
diff --git a/src/include/utils/rel.h b/src/include/utils/rel.h
index 9080a3c1609..1385ff3d04c 100644
--- a/src/include/utils/rel.h
+++ b/src/include/utils/rel.h
@@ -606,7 +606,6 @@ typedef struct ViewOptions
 /* routines in utils/cache/relcache.c */
 extern void RelationIncrementReferenceCount(Relation rel);
 extern void RelationDecrementReferenceCount(Relation rel);
-extern bool RelationHasUnloggedIndex(Relation rel);
 extern List *RelationGetRepsetList(Relation rel);
 
 #endif							/* REL_H */
diff --git a/src/include/utils/snapmgr.h b/src/include/utils/snapmgr.h
index 6641ee510a1..62351a06bdf 100644
--- a/src/include/utils/snapmgr.h
+++ b/src/include/utils/snapmgr.h
@@ -41,7 +41,6 @@
 	 RelationNeedsWAL(rel) \
   && !IsCatalogRelation(rel) \
   && !RelationIsAccessibleInLogicalDecoding(rel) \
-  && !RelationHasUnloggedIndex(rel) \
 )
 
 #define EarlyPruningEnabled(rel) (old_snapshot_threshold >= 0 && RelationAllowsEarlyPruning(rel))