Remove jobs building os core in integration test

[hsiang9431-amzn]

opensearch-project/security-dashboards-plugin pull request intake form

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1. Category: (Enhancement, New feature, Bug fix, Test fix, Refactoring, Maintenance, Documentation)

2. Github Issue # or road-map entry, if available:

3. Description of changes:

4. Why these changes are required?

5. What is the old behavior before changes and new behavior after changes? (Please add any example/logs/screen-shot if available)

6. Testing done: (Please provide details of testing done: Unit testing, integration testing and manual testing)

7. TO-DOs, if any: (Please describe pending items and provide Github issues# for each of them)

8. Is it backport from main branch? (If yes, please add backport PR # and commits #)

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[codecov-commenter]

Codecov Report

Merging #860 (4f28002) into main (6171c72) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #860   +/-   ##
=======================================
  Coverage   71.98%   71.98%           
=======================================
  Files          87       87           
  Lines        1906     1906           
  Branches      247      247           
=======================================
  Hits         1372     1372           
  Misses        480      480           
  Partials       54       54           

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[dblock]

This still needs to be backported to 1.2 @hsiang9431-amzn.

[dblock]

@hsiang9431-amzn @davidlago was this backported?

[davidlago]

Yup! #863