staging: omap-thermal: remove duplicated code

There is no need to assign twice the same variable with the very same value.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/omap-thermal/omap-bandgap.c

@@ -164,7 +164,6 @@ static irqreturn_t omap_bandgap_talert_irq_handler(int irq, void *data)
 	u32 t_hot = 0, t_cold = 0, ctrl;
 	int i;
 
-	bg_ptr = data;
 	/* Read the status of t_hot */
 	for (i = 0; i < bg_ptr->conf->sensor_count; i++) {
 		tsr = bg_ptr->conf->sensors[i].registers;