[Telephony] Remove the dead code setRadioCapability in ITelephony

     */

    void shutdownMobileRadios();

    /**

     * Set phone radio type and access technology.

     *

     * @param rafs an RadioAccessFamily array to indicate all phone's

     *        new radio access family. The length of RadioAccessFamily

     *        must equ]]al to phone count.

     */

    void setRadioCapability(in RadioAccessFamily[] rafs);

    /**

     * Get phone radio type and access technology.

     *