1 files changed, 0 insertions, 16 deletions
diff --git a/src/mongo/db/exec/index_scan.cpp b/src/mongo/db/exec/index_scan.cpp
index 1110ed78799..45f45da73f4 100644
--- a/src/mongo/db/exec/index_scan.cpp
+++ b/src/mongo/db/exec/index_scan.cpp
@@ -258,22 +258,6 @@ void IndexScan::doReattachToOperationContext() {
         _indexCursor->reattachToOperationContext(getOpCtx());
 }
 
-void IndexScan::doInvalidate(OperationContext* opCtx, const RecordId& dl, InvalidationType type) {
-    // The only state we're responsible for holding is what RecordIds to drop.  If a document
-    // mutates the underlying index cursor will deal with it.
-    if (INVALIDATION_MUTATION == type) {
-        return;
-    }
-
-    // If we see this RecordId again, it may not be the same document it was before, so we want
-    // to return it if we see it again.
-    stdx::unordered_set<RecordId, RecordId::Hasher>::iterator it = _returned.find(dl);
-    if (it != _returned.end()) {
-        ++_specificStats.seenInvalidated;
-        _returned.erase(it);
-    }
-}
-
 std::unique_ptr<PlanStageStats> IndexScan::getStats() {
     // WARNING: this could be called even if the collection was dropped.  Do not access any
     // catalog information here.