No need to install wheel any more

setuptools has had a native bdist_wheel since 70.1.0:
https://setuptools.pypa.io/en/latest/history.html#v70-1-0

Author: stefanor

testing/cffi0/test_zintegration.py

@@ -17,22 +17,21 @@ def create_venv(name):
     try:
         # FUTURE: we should probably update this to use venv for at least more modern Pythons, and
         # install setuptools/pip/etc explicitly for the tests that require them (as venv has stopped including
-        # setuptools and wheel by default for newer versions).
+        # setuptools by default for newer versions).
         subprocess.check_call(['virtualenv', 
             #'--never-download', <= could be added, but causes failures
             # in random cases on random machines
                                '-p', os.path.abspath(sys.executable),
                                str(tmpdir)])
 
-        # Newer venv/virtualenv no longer include setuptools and wheel by default, which
+        # Newer venv/virtualenv no longer include setuptools by default, which
         # breaks a number of these tests; ensure they're always present
         subprocess.check_call([
             os.path.join(tmpdir, 'bin/python'),
             '-m',
             'pip',
             'install',
             'setuptools',
-            'wheel',
             '--upgrade'
         ])