[#655] storage: Drop LazyHandler

LazyHandler is implemented and used incorrectly.

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

pkg/local_object_storage/blobstor/blobovniczatree/iterate.go

@@ -53,9 +53,7 @@ func (b *Blobovniczas) Iterate(ctx context.Context, prm common.IteratePrm) (comm
 					StorageID:  []byte(p),
 				})
 			}
-			return prm.LazyHandler(elem.Address(), func() ([]byte, error) {
-				return data, err
-			})
+			return nil
 		})
 		subPrm.DecodeAddresses()