Although defined in platform data, vref is not used anywhere.
Also remove model, irq, and clear_penirq as they are not used either.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
        struct delayed_work     work;
        struct ts_event         tc;
        struct tps6507x_dev     *mfd;
-       u16                     model;
        u16                     min_pressure;
-       int                     irq;
-       void                    (*clear_penirq)(void);
        unsigned long           poll_period;    /* ms */
-       int                     vref;           /* non-zero to leave vref on */
        bool                    pendown;
 };
 
 
        if (init_data) {
                tsc->poll_period = init_data->poll_period;
-               tsc->vref = init_data->vref;
                tsc->min_pressure = init_data->min_pressure;
                input_dev->id.vendor = init_data->vendor;
                input_dev->id.product = init_data->product;
 
 /* Board specific touch screen initial values */
 struct touchscreen_init_data {
        int     poll_period;    /* ms */
-       int     vref;           /* non-zero to leave vref on */
        __u16   min_pressure;   /* min reading to be treated as a touch */
        __u16   vendor;
        __u16   product;