Settings: Remove security settings placeholder

    android:key="security_dashboard_page"

    android:title="@string/security_settings_title">

    <!-- security_settings_status.xml -->

    <PreferenceCategory

        android:order="-10"

        android:key="security_status"

        android:title="@string/security_status_title" />

    <PreferenceCategory

        android:order="1"

        android:key="dashboard_tile_placeholder" />