Revert "In msvc9_query_vcvarsall, ensure dict values are not unicode. Fixes #992."

This reverts commit b50fdf49.

setuptools/msvc.py

@@ -27,7 +27,6 @@ from packaging.version import LegacyVersion
 from six.moves import filterfalse
 
 from .monkey import get_unpatched
-from . import py27compat
 
 if platform.system() == 'Windows':
     from six.moves import winreg
@@ -136,13 +135,11 @@ def msvc9_query_vcvarsall(ver, arch='x86', *args, **kwargs):
 
     # If error, try to set environment directly
     try:
-        env = EnvironmentInfo(arch, ver).return_env()
+        return EnvironmentInfo(arch, ver).return_env()
     except distutils.errors.DistutilsPlatformError as exc:
         _augment_exception(exc, ver, arch)
         raise
 
-    return py27compat.dict_values_strings(env)
-
 
 def msvc14_get_vc_env(plat_spec):
     """

setuptools/py27compat.py

@@ -26,17 +26,3 @@ linux_py2_ascii = (
 
 rmtree_safe = str if linux_py2_ascii else lambda x: x
 """Workaround for http://bugs.python.org/issue24672"""
-
-
-def dict_values_strings(dict_):
-    """
-    Given a dict, make sure the text values are str.
-    """
-    if six.PY3:
-        return dict_
-
-    # When dropping Python 2.6 support, use a dict constructor
-    return dict(
-        (key, str(value))
-        for key, value in dict_.iteritems()
-    )