Windows: Remove duplicate file

Windows: Remove duplicate file

The 'Streamfiles.txt' file had been committed with both that name,
and an all lower case name. This makes git very sad on systems with
case insensitive filenames.

Change-Id: Ifc61e8b2366d8a191279f6ccbe394e55ffe15fef
Reviewed-on: http://gerrit.openafs.org/4550
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>
Tested-by: Jeffrey Altman <jaltman@openafs.org>
(cherry picked from commit ce256d586468911d5501f667c53247a837378c06)
Reviewed-on: http://gerrit.openafs.org/4551