Revert "Retry mix httpc with disabled middlebox_comp_mode (elixir-lang#14357)"

This reverts commit cf34fcc.

Author: Wigny

lib/mix/lib/mix/utils.ex

@@ -765,11 +765,6 @@ defmodule Mix.Utils do
           :httpc.set_options([ipfamily: fallback(inet)], :mix)
           request |> httpc_request(http_options) |> httpc_response()
 
-        {:error, {:failed_connect, [{:to_address, _}, {inet, _, reason}]}}
-        when inet in [:inet, :inet6] and elem(reason, 0) == :tls_alert ->
-          http_options = put_in(http_options, [:ssl, :middlebox_comp_mode], false)
-          request |> httpc_request(http_options) |> httpc_response()
-
         response ->
           httpc_response(response)
       end