packaging: stop installing Contributors.txt

This file isn't up to date. If we are going to call out
contributors, we should auto generate a file from `hg log`
or something. I don't think we need to include it in the
Windows install.

This change makes Inno more consistent with WiX, which
doesn't ship this file.

Differential Revision: https://phab.mercurial-scm.org/D7170

contrib/packaging/hgpackaging/py2exe.py

@@ -48,7 +48,6 b' STAGING_RULES = ['
     ('mercurial/default.d/*.rc', 'hgrc.d/'),
     ('mercurial/locale/**/*', 'locale/'),
     ('mercurial/templates/**/*', 'Templates/'),
-    ('CONTRIBUTORS', 'Contributors.txt'),
     ('COPYING', 'Copying.txt'),
 ]
 

contrib/win32/ReadMe.html

@@ -140,8 +140,7 b' editor = whatever'
     </p>
 
     <p>
-      Mercurial is Copyright 2005-2019 Matt Mackall and others. See
-      the <tt>Contributors.txt</tt> file for a list of contributors.
+      Mercurial is Copyright 2005-2019 Matt Mackall and others.
     </p>
 
     <p>