Revert of [Chrome Settings UI] If User Exceptions are not allowed, prevent editing / viewing.

ui/webui/resources/js/cr/ui/array_data_model.js

Index: ui/webui/resources/js/cr/ui/array_data_model.js
diff --git a/ui/webui/resources/js/cr/ui/array_data_model.js b/ui/webui/resources/js/cr/ui/array_data_model.js
index f594d205dc4890c5d2f3a72f177329b98d8d833f..969f9484ff8a295571d2c87f12929e24b71bfde3 100644
--- a/ui/webui/resources/js/cr/ui/array_data_model.js
+++ b/ui/webui/resources/js/cr/ui/array_data_model.js
@@ -222,17 +222,6 @@
     },
 
     /**
-     * Removes and returns the last item of the model.
-     *
-     * This dispatches a splice event.
-     *
-     * @return {*} The last item, or undefined if model has no more items.
-     */
-    pop: function() {
-      return this.splice(this.array_.length - 1, 1)[0];
-    },
-
-    /**
      * Updates the existing item with the new item.
      *
      * The existing item and the new item are regarded as the same item and the