gh-97669: Remove outdated example scripts

[vstinner]

Remove outdated example scripts. Copy them from Python 3.11 if you still need them.

Removed scripts:

• byext.py
• byteyears.py
• cleanfuture.py
• copytime.py
• crlf.py
• db2pickle.py
• dutree.doc
• dutree.py
• find-uname.py
• find_recursionlimit.py
• finddiv.py
• findlinksto.py
• findnocoding.py
• fixcid.py
• fixdiv.py
• fixheader.py
• fixnotice.py
• fixps.py
• get-remote-certificate.py
• google.py
• highlight.py
• ifdef.py
• import_diagnostics.py
• lfcr.py
• linktree.py
• lll.py
• mailerdaemon.py
• make_ctype.py
• mkreal.py
• objgraph.py
• pdeps.py
• pickle2db.py
• pindent.py
• pysource.py
• reindent-rst.py
• rgrep.py
• suff.py
• texi2html.py
• which.py

Changes:

• Remove test_fixcid, test_lll, test_pdeps and test_pindent of test.test_tools.
• Remove get-remote-certificate.py changelog entry, since the script was removed.
• FYI there is a copy of crlf.py in Lib/test/test_lib2to3/data/.

• Issue: Remove outdated Tools/scripts/ example scripts #97669

[vstinner]

Here is a first PR to remove scripts which look outdated to me. The remaining ones might be useful or are referenced in other parts of Python, so I prefer to write separated PRs for the other scripts that I plan to remove.

Since my first version, I restored md5sum.py and parse_html5_entities.py removed by mistake. I alsot restored untabify.py since it's used by patchcheck.py.

Note: first I created PR #97674 on the branch name "main" which is not convenient, so I closed it and created this PR instead.

[ericsnowcurrently]

It would be good to preserve at least some of these before this PR (or other PRs) get merged. See my post at https://discuss.python.org/t/remove-outdated-tools-scripts-scripts/19571/22.

I'm okay with simply finding the scripts on the 3.11 branch.

[gvanrossum]

I might preserve these too (in the same repo) but not right now. Go ahead with the removal though.

[vstinner]

I might preserve these too (in the same repo) but not right now. Go ahead with the removal though.

Once most scripts will be removed and a copy of these scripts will be created, we can document the removal in What's New In Python 3.12 with a link to this copy.

[warsaw]

mailerdaemon.py can probably be replaced (possibly with some wrapper code) with flufl.bounce.

[gvanrossum]

Sure. I expect that we may be removing one or two scripts that are still depended on by some platform or workflow, but that's okay -- we'll just restore those when we get complaints.

[gvanrossum]

And yes, these are now also in my https://github.com/gvanrossum/old-demos repo.

[vstinner]

I completed to doc to mention the removal in What's New in Python 3.12 with a link to https://github.com/gvanrossum/old-demos

[vstinner]

Ok, I removed a first batch of outdated scripts.