openssh: remove obsolete patch for setting UsePrivilegeSeparation

Note:

By default UsePrivilegeSeparation is set to "sandbox" which enforces additional
restrictions to the pre-authentication unprivileged process.

security/openssh/enable_privsep.patch

@@ -1,30 +0,0 @@
-# --- SDE-COPYRIGHT-NOTE-BEGIN ---
-# This copyright note is auto-generated by ./scripts/Create-CopyPatch.
-#
-# Filename: package/.../openssh/enable_privsep.patch
-# Copyright (C) 2004 - 2006 The T2 SDE Project
-# Copyright (C) 1998 - 2003 Clifford Wolf
-#
-# More information can be found in the files COPYING and README.
-#
-# This patch file is dual-licensed. It is available under the license the
-# patched project is licensed under, as long as it is an OpenSource license
-# as defined at http://www.opensource.org/ (e.g. BSD, X11) or under the terms
-# of the GNU General Public License as published by the Free Software
-# Foundation; either version 2 of the License, or (at your option) any later
-# version.
-# --- SDE-COPYRIGHT-NOTE-END ---
-
-diff -ru openssh-3.5p1_/sshd_config openssh-3.5p1/sshd_config
---- openssh-3.5p1_/sshd_config	2002-09-27 05:21:58.000000000 +0200
-+++ openssh-3.5p1/sshd_config	2002-11-17 18:40:16.000000000 +0100
-@@ -80,7 +80,7 @@
- #PrintLastLog yes
- #KeepAlive yes
- #UseLogin no
--#UsePrivilegeSeparation yes
-+UsePrivilegeSeparation yes
- #PermitUserEnvironment no
- #Compression yes
- 
-Only in openssh-3.5p1: sshd_config~