Remove a style from an object. Examples:
lv_obj_remove_style(obj, &style, LV_PART_ANY | LV_STATE_ANY); //Remove a specific style
lv_obj_remove_style(obj, NULL, LV_PART_MAIN | LV_STATE_ANY); //Remove all styles from the main part
lv_obj_remove_style(obj, NULL, LV_PART_ANY | LV_STATE_ANY); //Remove all styles