remove perses atommapper and scorer

[atravitz]

resolves #1635

We communicated to the board that we will be removing these in v1.11.0. My only concern is that I originally said v2.0 in the changelog.

To be thorough, we can give this one more deprecation cycle where we update the changelog to say "will be removed in v1.12.0" so that users have appropriate heads-up.

Checklist

• All new code is appropriately documented (user-facing code must have complete docstrings).
• Added a news entry, or the changes are not user-facing.
• Ran pre-commit: you can run pre-commit locally or comment on this PR with pre-commit.ci autofix.

Manual Tests: these are slow so don't need to be run every commit, only before merging and when relevant changes are made (generally at reviewer-discretion).

• GPU integration tests
• example notebook testing
• packaging tests: run this for any large feature PRs or PRs that add test data.

Developers certificate of origin

• I certify that this contribution is covered by the MIT License here and the Developer Certificate of Origin at https://developercertificate.org/.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.63%. Comparing base (528a597) to head (ed1a016).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1943      +/-   ##
==========================================
- Coverage   94.72%   90.63%   -4.10%     
==========================================
  Files         208      206       -2     
  Lines       18779    18634     -145     
==========================================
- Hits        17789    16888     -901     
- Misses        990     1746     +756     

Flag	Coverage Δ
fast-tests	90.63% <100.00%> (?)
slow-tests	?

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[github-actions]

No API break detected ✅