Remove an unused perl module

Another one related to fdo#39747.

The file solenv/bin/modules/installer/configuration.pm isn't used at
all currently.  (I see that it was used for a while back in 2004 by
make_installer.pl.)  This patch drops the file.

LGPLv3+/MPL

Jordan Ayers

>From fc1a7ebdb81cfb927f80a4ba4fb625a40840263f Mon Sep 17 00:00:00 2001
From: Jordan Ayers <jordan.ayers@gmail.com>
Date: Mon, 22 Aug 2011 23:42:00 -0500
Subject: [PATCH] Remove unused perl module.