Packaging cleanup: remove use of script_name where obsolete
diff --git a/Lib/packaging/run.py b/Lib/packaging/run.py
index c17ccfd..3afda5a 100644
--- a/Lib/packaging/run.py
+++ b/Lib/packaging/run.py
@@ -405,7 +405,6 @@
         self.verbose = 1
         self.dry_run = False
         self.help = False
-        self.script_name = 'pysetup'
         self.cmdclass = {}
         self.commands = []
         self.command_options = {}
diff --git a/Lib/packaging/tests/test_command_bdist_dumb.py b/Lib/packaging/tests/test_command_bdist_dumb.py
index 41b0dd0..b235795 100644
--- a/Lib/packaging/tests/test_command_bdist_dumb.py
+++ b/Lib/packaging/tests/test_command_bdist_dumb.py
@@ -49,7 +49,6 @@
                              'py_modules': ['foo'],
                              'url': 'xxx', 'author': 'xxx',
                              'author_email': 'xxx'})
-        dist.script_name = 'setup.py'
         os.chdir(pkg_dir)
 
         sys.argv[:] = ['setup.py']
diff --git a/Lib/packaging/tests/test_command_build_py.py b/Lib/packaging/tests/test_command_build_py.py
index 49069f5..243a863 100644
--- a/Lib/packaging/tests/test_command_build_py.py
+++ b/Lib/packaging/tests/test_command_build_py.py
@@ -33,9 +33,7 @@
 
         dist = Distribution({"packages": ["pkg"],
                              "package_dir": sources})
-        # script_name need not exist, it just need to be initialized
 
-        dist.script_name = os.path.join(sources, "setup.py")
         dist.command_obj["build"] = support.DummyCommand(
             force=False,
             build_lib=destination,
@@ -89,8 +87,6 @@
             dist = Distribution({"packages": ["pkg"],
                                  "package_dir": sources,
                                  "package_data": {"pkg": ["doc/*"]}})
-            # script_name need not exist, it just need to be initialized
-            dist.script_name = os.path.join(sources, "setup.py")
             dist.script_args = ["build"]
             dist.parse_command_line()
 
diff --git a/Lib/packaging/tests/test_command_install_dist.py b/Lib/packaging/tests/test_command_install_dist.py
index 1974a2f..7821a3a 100644
--- a/Lib/packaging/tests/test_command_install_dist.py
+++ b/Lib/packaging/tests/test_command_install_dist.py
@@ -30,8 +30,6 @@
         destination = os.path.join(builddir, "installation")
 
         dist = Distribution({"name": "foopkg"})
-        # script_name need not exist, it just need to be initialized
-        dist.script_name = os.path.join(builddir, "setup.py")
         dist.command_obj["build"] = support.DummyCommand(
             build_base=builddir,
             build_lib=os.path.join(builddir, "lib"),
diff --git a/Lib/packaging/tests/test_command_install_lib.py b/Lib/packaging/tests/test_command_install_lib.py
index 96749e3..b46f3bd 100644
--- a/Lib/packaging/tests/test_command_install_lib.py
+++ b/Lib/packaging/tests/test_command_install_lib.py
@@ -65,7 +65,6 @@
         self.write_file(f, '# python package')
         cmd.distribution.ext_modules = [Extension('foo', ['xxx'])]
         cmd.distribution.packages = [pkg_dir]
-        cmd.distribution.script_name = 'setup.py'
 
         # make sure the build_lib is set the temp dir
         build_dir = os.path.split(pkg_dir)[0]
@@ -86,7 +85,6 @@
         self.write_file(f, '# python package')
         cmd.distribution.ext_modules = [Extension('foo', ['xxx'])]
         cmd.distribution.packages = [pkg_dir]
-        cmd.distribution.script_name = 'setup.py'
 
         # get_input should return 2 elements
         self.assertEqual(len(cmd.get_inputs()), 2)
diff --git a/Lib/packaging/tests/test_command_sdist.py b/Lib/packaging/tests/test_command_sdist.py
index 7be349f..bcaa630 100644
--- a/Lib/packaging/tests/test_command_sdist.py
+++ b/Lib/packaging/tests/test_command_sdist.py
@@ -24,12 +24,6 @@
 from packaging.tests import support
 from shutil import get_archive_formats
 
-SETUP_PY = """
-from packaging.core import setup
-import somecode
-
-setup(name='fake')
-"""
 
 MANIFEST = """\
 # file GENERATED by packaging, do NOT edit
@@ -57,8 +51,6 @@
     restore_environ = ['HOME']
 
     def setUp(self):
-        # PyPIRCCommandTestCase creates a temp dir already
-        # and put it in self.tmp_dir
         super(SDistTestCase, self).setUp()
         self.tmp_dir = self.mkdtemp()
         os.environ['HOME'] = self.tmp_dir
@@ -69,7 +61,6 @@
         # a package, and a README
         self.write_file((self.tmp_dir, 'README'), 'xxx')
         self.write_file((self.tmp_dir, 'somecode', '__init__.py'), '#')
-        self.write_file((self.tmp_dir, 'setup.py'), SETUP_PY)
         os.chdir(self.tmp_dir)
 
     def tearDown(self):
@@ -84,7 +75,6 @@
                         'url': 'xxx', 'author': 'xxx',
                         'author_email': 'xxx'}
         dist = Distribution(metadata)
-        dist.script_name = 'setup.py'
         dist.packages = ['somecode']
         dist.include_package_data = True
         cmd = sdist(dist)