diff --git a/staging/src/k8s.io/apimachinery/pkg/apis/meta/v1/types.go b/staging/src/k8s.io/apimachinery/pkg/apis/meta/v1/types.go
index a0827c66c37..2a669062cab 100644
--- a/staging/src/k8s.io/apimachinery/pkg/apis/meta/v1/types.go
+++ b/staging/src/k8s.io/apimachinery/pkg/apis/meta/v1/types.go
@@ -439,20 +439,6 @@ const (
 	//
 	// The annotation is added to a "Bookmark" event.
 	InitialEventsAnnotationKey = "k8s.io/initial-events-end"
-
-	// InitialEventsListBlueprintAnnotationKey is the name of the key
-	// where an empty, versioned list is encoded in the requested format
-	// (e.g., protobuf, JSON, CBOR), then base64-encoded and stored as a string.
-	//
-	// This encoding matches the request encoding format, which may be
-	// protobuf, JSON, CBOR, or others, depending on what the client requested.
-	// This ensures that the reconstructed list can be processed through the
-	// same decoder chain that would handle a standard LIST call response.
-	//
-	// The annotation is added to a "Bookmark" event and is used by clients
-	// to guarantee the format consistency when reconstructing
-	// the list during WatchList processing.
-	InitialEventsListBlueprintAnnotationKey = "kubernetes.io/initial-events-list-blueprint"
 )
 
 // resourceVersionMatch specifies how the resourceVersion parameter is applied. resourceVersionMatch