message: remove outdated `cache_control` from `impl_axum_webpage`
diff: @@ -48,11 +48,11 @@ macro_rules! impl_webpage {
  #[macro_export]
  macro_rules! impl_axum_webpage {
  - ($page:ty = $template:literal $(, status = $status:expr)? $(, cache_control = $cache_control:expr)? $(, content_type = $content_type:expr)? $(,)?) => {
  + ($page:ty = $template:literal $(, status = $status:expr)? $(, content_type = $content_type:expr)? $(,)?) => {
  $crate::impl_axum_webpage!($page = |_| ::std::borrow::Cow::Borrowed($template) $(, status = $status)? $(, content_type = $content_type)?);
  };
  - ($page:ty = $template:expr $(, status = $status:expr)? $(, cache_control = $cache_control:expr)? $(, content_type = $content_type:expr)? $(,)?) => {
  + ($page:ty = $template:expr $(, status = $status:expr)? $(, content_type = $content_type:expr)? $(,)?) => {
  impl axum::response::IntoResponse for $page
  {
  fn into_response(self) -> ::axum::response::Response {
  @@ -71,12 +71,6 @@ macro_rules! impl_axum_webpage {
  (status)(&self)
  })
  )?
  - $(
  - .header(
  - ::axum::http::header::CACHE_CONTROL,
  - ::axum::http::HeaderValue::from_str($cache_control).unwrap(),
  - )
  - )?
  // this empty body will be replaced in `render_templates_middleware` using
  // the data from `DelayedTemplateRender` below.
  .body(::axum::body::boxed(::axum::body::Body::empty()))
  