Remove comment

Author: dlarocque

packages/storage/src/reference.ts

@@ -19,8 +19,6 @@
  * @fileoverview Defines the Firebase StorageReference class.
  */
 
-// import { ReadableStream, TransformStream, Transformer } from 'stream/web';
-
 import { FbsBlob } from './implementation/blob';
 import { Location } from './implementation/location';
 import { getMappings } from './implementation/metadata';