how to remove the top-panel to bottom about material-awesome HOT 1 CLOSED

local panel =
    wibox(
    {
      ontop = true,
      screen = s,
      height = dpi(48),
      width = s.geometry.width - offsetx,
      x = s.geometry.x + offsetx,
      y = s.geometry.y,
      stretch = false,
      bg = beautiful.background.hue_800,
      fg = beautiful.fg_normal,
      struts = {
        top = dpi(48)
      }
    }
  )