Don't show approval on admin user page if the site doesn't require approval of users (must_approve_users)

app/assets/javascripts/admin/controllers/admin_user_controller.js

@@ -22,5 +22,9 @@ Discourse.AdminUserController = Discourse.ObjectController.extend({
     });
 
     this.toggleTitleEdit();
-  }
+  },
+
+  showApproval: function() {
+    return Discourse.SiteSettings.must_approve_users;
+  }.property()
 });