Remove unneeded experiment model layer items

changed milestone to %15.5

added Next Up auto updated deprecation devopsgrowth groupacquisition missed:14.7 missed:14.8 sectiongrowth typemaintenance workflowin dev labels

assigned to @dstull

Proper labels assigned to this merge request. Please ignore me.

@dstull - please see the following guidance and update this merge request.

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added 1 commit

76c0798e - Remove unused exmod content at model layer

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added backend label

Reviewer roulette

Changes that require review have been detected!

Please refer to the table below for assigning reviewers and maintainers suggested by Danger in the specified category:

Category	Reviewer	Maintainer
backend	Eugie Limpin (`@eugielimpin`) (UTC+8, 12 hours ahead of `@dstull`)	Jan Provaznik (`@jprovaznik`) (UTC+2, 6 hours ahead of `@dstull`)

To spread load more evenly across eligible reviewers, Danger has picked a candidate for each review slot, based on their timezone. Feel free to override these selections if you think someone else would be better-suited or use the GitLab Review Workload Dashboard to find other available reviewers.

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mentioned in issue #349246 (closed)

changed the description

marked this merge request as ready

added 662 commits

76c0798e...77f58d6a - 661 commits from branch master
1bd3e150 - Remove unused exmod content at model layer

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added 4 commits

1bd3e150...76abf813 - 3 commits from branch master
05de321c - Remove unused exmod content at model layer

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@alexbuijs another one for you related to EXMOD if you will please review for backend.

requested review from @alexbuijs

added workflowin review label and removed workflowin dev label

added maintenancerefactor label

resolved all threads

marked the checklist item I have evaluated the MR acceptance checklist for this MR. as completed

Allure report

allure-report-publisher generated test report!

e2e-review-qa: test report for 95f9f61a

expand test summary

+------------------------------------------------------------+
|                       suites summary                       |
+-------+--------+--------+---------+-------+-------+--------+
|       | passed | failed | skipped | flaky | total | result |
+-------+--------+--------+---------+-------+-------+--------+
+-------+--------+--------+---------+-------+-------+--------+
| Total | 0      | 0      | 0       | 0     | 0     | ➖     |
+-------+--------+--------+---------+-------+-------+--------+