Remove 'nt/zipdist.bat' (no longer used)

* nt/zipdist.bat: Remove - no longer used.

nt/zipdist.bat

-@echo off
-rem Copyright (C) 2001-2015 Free Software Foundation, Inc.
-
-rem Author: Christoph Scholtes cschol2112 at gmail.com
-
-rem This file is part of GNU Emacs.
-
-rem GNU Emacs is free software: you can redistribute it and/or modify
-rem it under the terms of the GNU General Public License as published by
-rem the Free Software Foundation, either version 3 of the License, or
-rem (at your option) any later version.
-
-rem GNU Emacs is distributed in the hope that it will be useful,
-rem but WITHOUT ANY WARRANTY; without even the implied warranty of
-rem MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-rem GNU General Public License for more details.
-
-rem You should have received a copy of the GNU General Public License
-rem along with GNU Emacs.  If not, see http://www.gnu.org/licenses/.
-
-SETLOCAL
-rem arg 1: Emacs version number
-set EMACS_VER=%1
-
-set TMP_DIST_DIR=emacs-%EMACS_VER%
-
-rem Check, if 7zip is installed and available on path
-7z 1>NUL 2>NUL
-if %ERRORLEVEL% NEQ 0 goto ZIP_ERROR
-goto ZIP_DIST
-
-:ZIP_ERROR
-echo.
-echo ERROR: Make sure 7zip is installed and available on the Windows Path!
-goto EXIT
-
-rem Build and verify the binary distribution
-:ZIP_DIST
-7z a -bd -tZIP -mx=9 -x!.gitignore -xr!emacs.mdp -xr!*.pdb -xr!*.opt -xr!*~ -xr!CVS -xr!.arch-inventory emacs-%EMACS_VER%-bin-i386.zip %TMP_DIST_DIR%
-7z t emacs-%EMACS_VER%-bin-i386.zip
-goto EXIT
-
-:EXIT