Remove py2_warn, no longer needed as a SyntaxError is encountered before the...

Remove py2_warn, no longer needed as a SyntaxError is encountered before the warning can be issueed.

pkg_resources/__init__.py

@@ -82,7 +82,6 @@ __import__('pkg_resources.extern.packaging.version')
 __import__('pkg_resources.extern.packaging.specifiers')
 __import__('pkg_resources.extern.packaging.requirements')
 __import__('pkg_resources.extern.packaging.markers')
-__import__('pkg_resources.py2_warn')
 
 
 __metaclass__ = type

pkg_resources/py2_warn.py

-import sys
-import warnings
-import textwrap
-
-
-msg = textwrap.dedent("""
-    Encountered a version of Setuptools that no longer supports
-    this version of Python. Please head to
-    https://bit.ly/setuptools-py2-sunset for support.
-    """)
-
-pre = "Setuptools no longer works on Python 2\n"
-
-if sys.version_info < (3,):
-    warnings.warn(pre + "*" * 60 + msg + "*" * 60)
-    raise SystemExit(32)