[easytag/wip/mingw: 10/10] Remove obsolete mingw build files

[David King <davidk src gnome org>]

commit 2d2949a2f4eb6e9cd405226f7e9c30c1dd4772e4
Author: David King <amigadave amigadave com>
Date:   Wed Jan 16 20:45:36 2013 +0000

    Remove obsolete mingw build files
    
    They are no longer required now that the mingw build has been merged
    into the rest of the build system.

 Makefile.mingw    |   54 -------
 config.h.mingw    |  437 -----------------------------------------------------
 po/Makefile.mingw |   68 --------
 3 files changed, 0 insertions(+), 559 deletions(-)