Remove major version from /downloads/feed.rss

[hugovk]

Description

Feed items at https://www.python.org/downloads/feed.rss look like:

		<item>
			<title>Python 3.12.7</title>
			<link>https://www.python.org/downloads/release/python-3127/</link>
			<description>Version: 3, Release Date: 2024-10-01 04:50:32+00:00</description>
			<pubDate>Tue, 01 Oct 2024 04:50:32 +0000</pubDate>
			<guid>https://www.python.org/downloads/release/python-3127/</guid>
		</item>
		<item>
			<title>Python 3.13.0rc3</title>
			<link>https://www.python.org/downloads/release/python-3130rc3/</link>
			<description>Version: 3, Release Date: 2024-10-01 04:42:14+00:00</description>
			<pubDate>Tue, 01 Oct 2024 04:42:14 +0000</pubDate>
			<guid>https://www.python.org/downloads/release/python-3130rc3/</guid>
		</item>

That "Version: 3" isn't really useful: version 2 is long gone and version 4 is unlikely.

Let's remove it.

PS I've hooked up the feed to a Mastodon account: https://mastodon.social/@[email protected]