Revert MediaProxy Host header validation

Something is going wrong here even though the tests are correct.

test/pleroma/web/media_proxy/media_proxy_controller_test.exs

@@ -54,35 +54,6 @@ defmodule Pleroma.Web.MediaProxy.MediaProxyControllerTest do
              } = get(conn, "/proxy/hhgfh/eeee/fff")
     end
 
-    test "it returns a 302 for invalid host", %{conn: conn} do
-      new_proxy_base = "http://mp.localhost/"
-
-      %{scheme: new_proxy_scheme, host: new_proxy_host, port: new_proxy_port} =
-        URI.parse(new_proxy_base)
-
-      clear_config([:media_proxy, :base_url], new_proxy_base)
-
-      proxy_url =
-        MediaProxy.encode_url("https://pleroma.social/logo.jpeg")
-        |> URI.parse()
-        |> Map.put(:host, "wronghost")
-        |> URI.to_string()
-
-      expected_url =
-        URI.parse(proxy_url)
-        |> Map.put(:host, new_proxy_host)
-        |> Map.put(:port, new_proxy_port)
-        |> Map.put(:scheme, new_proxy_scheme)
-        |> URI.to_string()
-
-      with_mock Pleroma.ReverseProxy,
-        call: fn _conn, _url, _opts -> %Conn{status: :success} end do
-        conn = get(conn, proxy_url)
-
-        assert redirected_to(conn, 302) == expected_url
-      end
-    end
-
     test "redirects to valid url when filename is invalidated", %{conn: conn, url: url} do
       invalid_url = String.replace(url, "test.png", "test-file.png")
       response = get(conn, invalid_url)

test/support/conn_case.ex

@@ -120,9 +120,6 @@ defmodule Pleroma.Web.ConnCase do
 
     Mox.verify_on_exit!()
 
-    {:ok,
-     conn:
-       Phoenix.ConnTest.build_conn()
-       |> Map.put(:host, Pleroma.Web.Endpoint.host())}
+    {:ok, conn: Phoenix.ConnTest.build_conn()}
   end
 end