Remove setting switch for phrase gesture.

        android:title="@string/gesture_preview_trail"

        android:defaultValue="true"

        android:persistent="true" />

    <CheckBoxPreference

        android:key="pref_gesture_space_aware"

        android:dependency="gesture_input"

        android:title="@string/gesture_space_aware"

        android:summary="@string/gesture_space_aware_summary"

        android:defaultValue="true"

        android:persistent="true" />

</PreferenceScreen>