lv_mbox: remove incorrect assignment
@@ -199,7 +199,6 @@ void lv_mbox_set_anim_time(lv_obj_t * mbox, uint16_t anim_time)
#if LV_USE_ANIMATION
lv_mbox_ext_t * ext = lv_obj_get_ext_attr(mbox);
- anim_time = 0;
ext->anim_time = anim_time;
#else
(void)mbox;
