Fix warnings on Elixir v1.20

Author: josevalim

lib/plug/parsers/multipart.ex

@@ -226,7 +226,7 @@ defmodule Plug.Parsers.MULTIPART do
 
   defp parse_multipart_file({:more, tail, conn}, limit, opts, file)
        when limit >= byte_size(tail) do
-    binwrite!(file, tail)
+    IO.binwrite(file, tail)
     read_result = Plug.Conn.read_part_body(conn, opts)
     parse_multipart_file(read_result, limit - byte_size(tail), opts, file)
   end
@@ -237,7 +237,7 @@ defmodule Plug.Parsers.MULTIPART do
 
   defp parse_multipart_file({:ok, tail, conn}, limit, _opts, file)
        when limit >= byte_size(tail) do
-    binwrite!(file, tail)
+    IO.binwrite(file, tail)
     {:ok, limit - byte_size(tail), conn}
   end
 
@@ -247,18 +247,6 @@ defmodule Plug.Parsers.MULTIPART do
 
   ## Helpers
 
-  defp binwrite!(device, contents) do
-    case IO.binwrite(device, contents) do
-      :ok ->
-        :ok
-
-      {:error, reason} ->
-        raise Plug.UploadError,
-              "could not write to file #{inspect(device)} during upload " <>
-                "due to reason: #{inspect(reason)}"
-    end
-  end
-
   defp multipart_type(headers) do
     with {_, disposition} <- List.keyfind(headers, "content-disposition", 0),
          [_, params] <- :binary.split(disposition, ";"),