universal8890: Remove config_tether_upstream_types overlay

        <item>bt-pan</item>

    </string-array>

    <!-- Array of ConnectivityManager.TYPE_xxxx values allowable for tethering -->

    <!-- Common options are [1, 4] for TYPE_WIFI and TYPE_MOBILE_DUN or

    <!== [0,1,5,7] for TYPE_MOBILE, TYPE_WIFI, TYPE_MOBILE_HIPRI and TYPE_BLUETOOTH -->

    <integer-array translatable="false" name="config_tether_upstream_types">

        <item>0</item>

        <item>1</item>

        <item>5</item>

        <item>7</item>

    </integer-array>

    <!-- Configure mobile tcp buffer sizes in the form:

         rat-name:rmem_min,rmem_def,rmem_max,wmem_min,wmem_def,wmem_max

         If no value is found for the rat-name in use, the system default will be applied.