Documentation for `ConfigParser.items()` states:
'Items present in vars no longer appear in the result.'

This fix aligns behaviour to that specified in the documentation.

chrBrd changed the title bpo-33251: ConfigParser.items no longer returns items present in vars. bpo-33251: Prevent ConfigParser.items returning items present in vars.

chrBrd deleted the fix-issue-33251 branch

chrBrd restored the fix-issue-33251 branch

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