Remove grossly outdated info (#1538)

It seems that line endings are handled in a style agnostic way by
`get_meta_tags()` for a long time now[1].  Thus, we drop the apparently
outdated info.

[1] <60fffd296a/ext/standard/file.c (L2442-L2445)>
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Christoph M. Becker 2022-04-22 18:05:25 +02:00 committed by GitHub
parent a7e787f40f
commit 6ecb3d2522
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@ -44,8 +44,6 @@
]]>
</programlisting>
</example>
(pay attention to line endings - PHP uses a native function to
parse the input, so a Mac file won't work on Unix).
</para>
</listitem>
</varlistentry>