Remove unused constant from TelephonyIntents.

    /**

     * Activity Action: Start this activity to invoke the carrier setup app.

     * To filter the intent, see {@link #CATEGORY_MCCMNC_PREFIX}.

     * The carrier app must be signed using a certificate that matches the UICC access rules.

     *

     * <p class="note">Callers of this should hold the android.permission.INVOKE_CARRIER_SETUP

     * permission.</p>

     */

    public static final String ACTION_CARRIER_SETUP = "android.intent.action.ACTION_CARRIER_SETUP";

    /**

     * A <em>prefix</em> for the MCC/MNC filtering used with {@link #ACTION_CARRIER_SETUP}.

     * The MCC/MNC will be concatenated (zero-padded to 3 digits each) to create a final

     * string of the form: {@code android.intent.category.MCCMNC_310260}

     */

    public static final String CATEGORY_MCCMNC_PREFIX = "android.intent.category.MCCMNC_";

    /**

     * Broadcast Action: A "secret code" has been entered in the dialer. Secret codes are

     * of the form {@code *#*#<code>#*#*}. The intent will have the data URI: