Remove timestamps from release, closes #9127

Author: José Valim

lib/elixir/lib/config/provider.ex

@@ -220,9 +220,7 @@ defmodule Config.Provider do
   end
 
   defp write_config!(config, path) do
-    {date, time} = :erlang.localtime()
-    args = [date, time, config]
-    contents = :io_lib.format("%% coding: utf-8~n%% config generated at ~p ~p~n~p.~n", args)
+    contents = :io_lib.format("%% coding: utf-8~n~p.~n", [config])
 
     case File.write(path, contents) do
       :ok ->

lib/mix/lib/mix/release.ex

@@ -318,9 +318,8 @@ defmodule Mix.Release do
     {sys_config, runtime?} = merge_provider_config(release, sys_config, config_provider_path)
     path = Path.join(release.version_path, "sys.config")
 
-    {date, time} = :erlang.localtime()
-    args = [runtime?, date, time, sys_config]
-    format = "%% coding: utf-8~n%% RUNTIME_CONFIG=~s~n%% config generated at ~p ~p~n~p.~n"
+    args = [runtime?, sys_config]
+    format = "%% coding: utf-8~n%% RUNTIME_CONFIG=~s~n~p.~n"
     File.mkdir_p!(Path.dirname(path))
     File.write!(path, :io_lib.format(format, args))
 
@@ -407,7 +406,7 @@ defmodule Mix.Release do
           :ok | {:error, String.t()}
   def make_boot_script(release, path, modes, prepend_paths \\ []) do
     with {:ok, rel_spec} <- build_release_spec(release, modes) do
-      File.write!(path <> ".rel", consultable("rel", rel_spec))
+      File.write!(path <> ".rel", consultable(rel_spec))
 
       sys_path = String.to_charlist(path)
 
@@ -430,7 +429,7 @@ defmodule Mix.Release do
             |> prepend_paths_to_script(prepend_paths)
 
           script = {:script, rel_info, instructions}
-          File.write!(script_path, consultable("script", script))
+          File.write!(script_path, consultable(script))
           :ok = :systools.script2boot(sys_path)
 
         {:error, module, info} ->
@@ -546,10 +545,8 @@ defmodule Mix.Release do
     end)
   end
 
-  defp consultable(kind, term) do
-    {date, time} = :erlang.localtime()
-    args = [kind, date, time, term]
-    :io_lib.format("%% coding: utf-8~n%% ~ts generated at ~p ~p~n~p.~n", args)
+  defp consultable(term) do
+    :io_lib.format("%% coding: utf-8~n~p.~n", [term])
   end
 
   @doc """