mcrypt: remove patch author

Removes my info so that it is not searchable on GitHub.

pkgs/tools/misc/mcrypt/malloc_to_stdlib.patch

···
 From e295844e8ef5c13487996ab700e5f12a7fadb1a6 Mon Sep 17 00:00:00 2001
-From: Nima Vasseghi <[e-mail]>
+From: Private <[e-mail]>
 Date: Wed, 30 Dec 2020 16:06:46 -0800
 Subject: [PATCH] malloc.h to stdlib.h in rfc2440.c