packaging: remove requirements constraints to support Python 2
We just deleted support for Python 2 from the packaging code. We no longer
need these package constraints in the requirements file to support Python 2.
Differential Revision: https://phab.mercurial-scm.org/D12267
--- a/contrib/packaging/requirements-windows.txt.in Sat Feb 19 22:13:11 2022 -0700
+++ b/contrib/packaging/requirements-windows.txt.in Sat Feb 19 22:14:41 2022 -0700
@@ -1,13 +1,11 @@
docutils
-# Pinned to an old version because 0.20 drops Python 3 compatibility.
-dulwich < 0.20 ; python_version <= '2.7'
-dulwich ; python_version >= '3'
+dulwich
# Needed by the release note tooling
fuzzywuzzy
keyring
-pygit2 ; python_version >= '3'
+pygit2
pygments
# Needed by the phabricator tests