refactor: Remove autodiff

[andiwand]

related issues (closes #2792)

• Remove autodiff documentation #2792

autodiff became more of a burden at some point. Since we do not consistently template all the quantities we might want to derive later this became more of an exception. I propose to remove it for now until we have a broader solution or purpose for it

[github-actions]

📊: Physics performance monitoring for 1105f56

Full contents

physmon summary

• ✅ CKF truth_smeared
• ✅ IVF truth_smeared
• ✅ AMVF truth_smeared
• ✅ Track Summary CKF truth_smeared
• ✅ Seeding truth_estimated
• ✅ CKF truth_estimated
• ✅ IVF truth_estimated
• ✅ AMVF truth_estimated
• ✅ Track Summary CKF truth_estimated
• ✅ Seeding seeded
• ✅ CKF seeded
• ✅ IVF seeded
• ✅ AMVF seeded
• ✅ AMVF (+grid seeder) seeded
• ✅ Track Summary CKF seeded
• ✅ Seeding orthogonal
• ✅ CKF orthogonal
• ✅ IVF orthogonal
• ✅ AMVF orthogonal
• ✅ Track Summary CKF orthogonal
• ✅ Ambisolver seeded
• ✅ Ambisolver orthogonal
• ✅ Seeding ttbar
• ✅ CKF ttbar
• ✅ Ambisolver
• ✅ Track Summary CKF ttbar
• ✅ AMVF ttbar
• ✅ AMVF (+grid seeder) ttbar
• ✅ Truth tracking (GSF)
• ✅ Truth tracking
• ✅ Particles fatras
• ✅ Particles geant4

[codecov]

Codecov Report

Attention: 116 lines in your changes are missing coverage. Please review.

Comparison is base (3a9c0bf) 48.99% compared to head (1105f56) 48.99%.

Files	Patch %	Lines
...lude/Acts/Propagator/DenseEnvironmentExtension.hpp	54.66%	6 Missing and 62 partials ⚠️
Core/include/Acts/Propagator/DefaultExtension.hpp	35.61%	0 Missing and 47 partials ⚠️
Core/include/Acts/EventData/Charge.hpp	92.30%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2793      +/-   ##
==========================================
- Coverage   48.99%   48.99%   -0.01%     
==========================================
  Files         496      495       -1     
  Lines       28938    28937       -1     
  Branches    13704    13704              
==========================================
- Hits        14179    14178       -1     
  Misses       4881     4881              
  Partials     9878     9878              

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[asalzburger]

Clean removal, as discussed, we should do that.

[asalzburger]

@andiwand - can you just resolve the conflict, please?

[paulgessinger]

I would like to hold this until @benjaminhuth has had a chance to look at this.

[benjaminhuth]

Hmm so I'm fine with removing the plugin. However, I used the template infrastructure as well for my experimental SIMD stepper implementation for the GSF which I did not try to merge yet...

Not sure if that's an argument to keep some of the template infrastructure (mainly that of detail::GenericDefaultExtension), and I try to merge it as Acts::Experimental?

However since this is still very experimental you could also remove all of this and I would add it again in case that becomes relevant in the future...

[andiwand]

I wound suggest to add the templating back in if necessary. Happy to help when this comes up

[acts-project-service]

✅ Athena integration test results [c2e1e6e]

✅ All tests successful

status	job	report
🟢	run_unit_tests
🟡	test_ActsEFTrackFit
🟢	test_ActsBenchmarkWithSpot
🟢	test_ActsWorkflow
🟢	test_ActsValidateAmbiguityResolution
🟢	test_ActsValidateResolvedTracks
🟢	test_ActsValidateTracks
🟢	test_ActsValidateActsCoreSpacePoints
🟢	test_ActsValidateActsSpacePoints
🟢	test_ActsValidateSeeds
🟢	test_ActsValidateOrthogonalSeeds
🟢	test_ActsValidateClusters
🟢	test_ActsPersistifyEDM
🟢	test_ActsGSFRefitting
🟢	test_ActsKfRefitting
🟢	test_ActsExtrapolationAlgTest
🟢	test_ActsITkTest
🟢	run_workflow_tests_run4_mc
🟢	run_workflow_tests_run2_mc
🟢	run_workflow_tests_run2_data
🟢	run_workflow_tests_run3_mc
🟢	run_workflow_tests_run3_data
🟢	run_art_test: test_data18_13TeV_1000evt
🟢	run_art_test: test_ttbarPU40_reco