fix(media_proxy): serve static previews instead of redirecting to the main host

Ported from Akkoma 4a810bb2e.

Co-authored-by: Oneric <oneric@oneric.stub>

lib/pleroma/web/media_proxy/media_proxy_controller.ex

@@ -7,7 +7,6 @@ defmodule Pleroma.Web.MediaProxy.MediaProxyController do
 
   alias Pleroma.Config
   alias Pleroma.Helpers.MediaHelper
-  alias Pleroma.Helpers.UriHelper
   alias Pleroma.ReverseProxy
   alias Pleroma.Web.MediaProxy
   alias Plug.Conn
@@ -67,9 +66,6 @@ defmodule Pleroma.Web.MediaProxy.MediaProxyController do
         static and content_type == "image/gif" ->
           handle_jpeg_preview(conn, media_proxy_url)
 
-        static ->
-          drop_static_param_and_redirect(conn)
-
         content_type == "image/gif" ->
           conn
           |> put_status(301)
@@ -166,15 +162,6 @@ defmodule Pleroma.Web.MediaProxy.MediaProxyController do
     end
   end
 
-  defp drop_static_param_and_redirect(conn) do
-    uri_without_static_param =
-      conn
-      |> current_url()
-      |> UriHelper.modify_uri_params(%{}, ["static"])
-
-    redirect(conn, external: uri_without_static_param)
-  end
-
   defp fallback_on_preview_error(conn, media_proxy_url) do
     redirect(conn, external: media_proxy_url)
   end