1 files changed, 1 insertions, 7 deletions
diff --git a/src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.cpp b/src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.cpp
index f58fe7cd92e..bf7db8530ec 100644
--- a/src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.cpp
+++ b/src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.cpp
@@ -832,13 +832,7 @@ SortedDataInterface* WiredTigerKVEngine::getGroupedSortedDataInterface(Operation
                                                                        const IndexDescriptor* desc,
                                                                        KVPrefix prefix) {
     if (desc->unique()) {
-        // MongoDB 4.0 onwards new index version `kV2Unique` would be supported. By default unique
-        // index would be created with index version `kV2`. New format unique index would be created
-        // only if `IndexVersion` is `kV2Unique` and for non _id indexes.
-        if (desc->version() == IndexDescriptor::IndexVersion::kV2Unique && !desc->isIdIndex())
-            return new WiredTigerIndexUniqueV2(opCtx, _uri(ident), desc, prefix, _readOnly);
-        else
-            return new WiredTigerIndexUnique(opCtx, _uri(ident), desc, prefix, _readOnly);
+        return new WiredTigerIndexUnique(opCtx, _uri(ident), desc, prefix, _readOnly);
     }
 
     return new WiredTigerIndexStandard(opCtx, _uri(ident), desc, prefix, _readOnly);