[MD settings] remove selectedSite property

chrome/browser/resources/settings/site_settings/all_sites.js

Index: chrome/browser/resources/settings/site_settings/all_sites.js
diff --git a/chrome/browser/resources/settings/site_settings/all_sites.js b/chrome/browser/resources/settings/site_settings/all_sites.js
index 33e48e9bec99448868b7e5956985ef36652a946f..98e88c72bc95d7a1555692f5871ea17ca3b8ba85 100644
--- a/chrome/browser/resources/settings/site_settings/all_sites.js
+++ b/chrome/browser/resources/settings/site_settings/all_sites.js
@@ -11,15 +11,4 @@ Polymer({
   is: 'all-sites',
 
   behaviors: [SiteSettingsBehavior],
-
-  properties: {
-    /**
-     * The site that was selected by the user in the dropdown list.
-     * @type {SiteException}
-     */
-    selectedSite: {
-      type: Object,
-      notify: true,
-    },
-  },
 });