Remove bdist_rpm and bdist_dumb comment

This comment is not used anywhere and `platform.dist()` is deprecated.

See CPython PR #10414: python/cpython#10414
and bpo-35186: https://bugs.python.org/issue35186

setuptools/command/upload.py

@@ -102,14 +102,8 @@ def upload_file(self, command, pyversion, filename):
             'requires': meta.get_requires(),
             'obsoletes': meta.get_obsoletes(),
             }
-        comment = ''
-        if command == 'bdist_rpm':
-            dist, version, id = platform.dist()
-            if dist:
-                comment = 'built for %s %s' % (dist, version)
-        elif command == 'bdist_dumb':
-            comment = 'built for %s' % platform.platform(terse=1)
-        data['comment'] = comment
+
+        data['comment'] = ''
 
         if self.sign:
             data['gpg_signature'] = (os.path.basename(filename) + ".asc",

setuptools/tests/test_upload.py

@@ -203,26 +203,6 @@ def test_upload_file_gpg(self, spawn, patched_upload):
         entries = patched_upload.get_uploaded_metadata()
         assert entries['gpg_signature'] == 'signed-data'
 
-    @pytest.mark.parametrize('bdist', ['bdist_rpm', 'bdist_dumb'])
-    @mock.patch('setuptools.command.upload.platform')
-    def test_bdist_rpm_upload(self, platform, bdist, patched_upload):
-        # Set the upload command to include bdist_rpm
-        cmd = patched_upload.cmd
-        dist_files = cmd.distribution.dist_files
-        dist_files = [(bdist,) + dist_files[0][1:]]
-        cmd.distribution.dist_files = dist_files
-
-        # Mock out the platform commands to make this platform-independent
-        platform.dist.return_value = ('redhat', '', '')
-
-        cmd.ensure_finalized()
-        cmd.run()
-
-        entries = patched_upload.get_uploaded_metadata()
-
-        assert entries['comment'].startswith(u'built for')
-        assert len(entries['comment']) > len(u'built for')
-
     def test_show_response_no_error(self, patched_upload):
         # This test is just that show_response doesn't throw an error
         # It is not really important what the printed response looks like