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[bot]]

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[bundlemon[bot]]

BundleMon (Integration Projects)

Unchanged files (2)

Status | Path | Size | Limits :------------: | ------------ | :------------: | :------------: :white_check_mark: | Main bundles(Gzip)
_{hello-world-ng17/dist-integration/main.(hash)
.js}
| 67.4KB | +1% :white_check_mark: | Main bundles(Gzip)
_{hello-world-ng16/dist-integration/main.(hash)
.js}
| 65.9KB | +1%

No change in files bundle size

Final result: :white_check_mark:

View report in BundleMon website ➡️

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Current branch size history | Target branch size history

[codeclimate[bot]]

Code Climate has analyzed commit 73d4ad98 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.