ci: remove integration_ng15_tests job

[arturovt]

This should have been removed in the migration PR, but I probably missed it. This should re-enable publish on master.

[nx-cloud]

☁️ Nx Cloud Report

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✅ Successfully ran 5 targets

• nx run-many --target=test --all --configuration=ci --base=remotes/origin/master --head=HEAD
• nx run-many --target=lint --all --configuration=ci --base=remotes/origin/master --head=HEAD
• nx run-many --target=build --all
• nx run-many --target=test --all --configuration=ci --maxWorkers=4
• nx run-many --target=lint --all

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[bundlemon]

BundleMon (Integration Projects)

Unchanged files (2)

Status	Path	Size	Limits
✅	Main bundles(Gzip) hello-world-ng17/dist-integration/main.(hash) .js	67.4KB	+1%
✅	Main bundles(Gzip) hello-world-ng16/dist-integration/main.(hash) .js	65.9KB	+1%

No change in files bundle size

Final result: ✅

View report in BundleMon website ➡️

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Current branch size history | Target branch size history

[codeclimate]

Code Climate has analyzed commit 73d4ad9 and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (50% is the threshold).

This pull request will bring the total coverage in the repository to 95.5% (0.0% change).

View more on Code Climate.