upload: Don't render upload button instead of hiding.

Doesn't make sense to hide the upload button button later when
we can just not show it if the browser doesn't has support for
it.

web/src/compose_setup.js

@@ -103,8 +103,6 @@ export function initialize() {
     const update_compose_max_height = new ResizeObserver(resize.reset_compose_message_max_height);
     update_compose_max_height.observe(document.querySelector("#compose"));
 
-    upload.feature_check($("#compose .compose_upload_file"));
-
     function get_input_info(event) {
         const $edit_banners_container = $(event.target).closest(".edit_form_banners");
         const is_edit_input = Boolean($edit_banners_container.length);