Revert "bpo-46986: Upgrade bundled setuptools to 60.9.3 (pythonGH-31820)" (pythonGH-31881)

This reverts commit bda64b3
as it breaks test_bdb and test_distutils with installed Pythons.

Author: ned-deily

Lib/ensurepip/__init__.py

@@ -11,8 +11,7 @@
 
 
 __all__ = ["version", "bootstrap"]
-_PACKAGE_NAMES = ('setuptools', 'pip')
-_SETUPTOOLS_VERSION = "60.9.3"
+_SETUPTOOLS_VERSION = "58.1.0"
 _PIP_VERSION = "22.0.4"
 _PROJECTS = [
     ("setuptools", _SETUPTOOLS_VERSION, "py3"),