diff --git a/lib/utils/flattened-nodes-observer.js b/lib/utils/flattened-nodes-observer.js
index 7a48f4f7b6..9ba036414d 100644
--- a/lib/utils/flattened-nodes-observer.js
+++ b/lib/utils/flattened-nodes-observer.js
@@ -136,10 +136,6 @@ export let FlattenedNodesObserver = class {
     this._schedule();
   }
 
-  _wrap(node) {
-    return node;
-  }
-
   /**
    * Activates an observer. This method is automatically called when
    * a `FlattenedNodesObserver` is created. It should only be called to
@@ -313,15 +309,4 @@ export let FlattenedNodesObserver = class {
     }
   }
 
-};
-
-if (window.ShadyDOM && window.ShadyDOM.inUse && window.ShadyDOM.noPatch) {
-  FlattenedNodesObserver = class extends FlattenedNodesObserver {
-
-    static _wrap(node) {
-      return Polymer.dom(node);
-    }
-
-  };
-
-}
\ No newline at end of file
+};
\ No newline at end of file