JP-3827: Remove err from ramp model

[melanieclarke]

Resolves JP-3827

This PR removes the unused error array from the 4D ramp models. In the jwst pipeline, error values are not meaningful until after ramp fitting.

Requires:
spacetelescope/stcal#334
spacetelescope/jwst#9109

Tasks

• update or add relevant tests
• update relevant docstrings and / or docs/ page
• Does this PR change any API used downstream? (if not, label with no-changelog-entry-needed)
  • write news fragment(s) in changes/: echo "changed something" > changes/<PR#>.<changetype>.rst (see below for change types)
  • run jwst regression tests with this branch installed ("git+https://github.com/<fork>/stdatamodels@<branch>")

news fragment change types...

• changes/<PR#>.feature.rst: new feature
• changes/<PR#>.bugfix.rst: fixes an issue
• changes/<PR#>.doc.rst: documentation change
• changes/<PR#>.removal.rst: deprecation or removal of public API
• changes/<PR#>.misc.rst: infrastructure or miscellaneous change

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.16%. Comparing base (788f7bd) to head (4e83608).
Report is 17 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #384       +/-   ##
===========================================
+ Coverage   67.59%   78.16%   +10.56%     
===========================================
  Files         115      115               
  Lines        5932     5144      -788     
===========================================
+ Hits         4010     4021       +11     
+ Misses       1922     1123      -799     

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[melanieclarke]

Running initial regtests here:
https://github.com/spacetelescope/RegressionTests/actions/runs/13039620799

Tests show differences in all intermediate products for detector1, as expected: the ERR extension is missing from all outputs. No differences found in rate or rateints products.

[braingram]

Code changes look good to me.

How do you want to schedule the 3 PRs?

[melanieclarke]

How do you want to schedule the 3 PRs?

Good question. They'll need to be merged near-simultaneously to avoid breaking each other, or else we'll need some special pinning magic. Let's wait to merge this one until the other two have approvals at least.

[braingram]

How do you want to schedule the 3 PRs?

Good question. They'll need to be merged near-simultaneously to avoid breaking each other, or else we'll need some special pinning magic. Let's wait to merge this one until the other two have approvals at least.

Thanks! That sounds good to me. Do you have a "Merge without waiting for requirements to be met" check box for this PR? It's failing branch protections (as expected) so if you don't have the ability to override the requirements we should sort out how to give you those permissions.

[melanieclarke]

Do you have a "Merge without waiting for requirements to be met" check box for this PR?

I do. I'll take care of it when we're ready.

[melanieclarke]

All three PRs are approved. I will merge now.