Remove MacOS daily tests

[cachedout]

What does this PR do?

Removes MacOS daily tests

Why is it important?

These tests have not passed in nearly 9 months. There is no consumer of these in Observability and there did not seem to be any discernible owner identified during the most recent discussion of them.

They should be removed prior to Jenkins being decommissioned.

[mergify]

This pull request does not have a backport label. Could you fix it @cachedout? 🙏
To fixup this pull request, you need to add the backport labels for the needed
branches, such as:

• backport-v./d./d./d is the label to automatically backport to the 7./d branch. /d is the digit
  NOTE: backport-skip has been added to this pull request.

[elasticmachine]

💔 Build Failed

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Build stats

• Start Time: 2023-07-19T10:30:18.434+0000

• Duration: 19 min 11 sec

Steps errors

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Setup Stack node

• Took 10 min 57 sec . View more details here
• Description: make -C .ci create-stack

Setup Stack node

• Took 3 min 2 sec . View more details here
• Description: make -C .ci create-stack

Setup Stack node

• Took 3 min 0 sec . View more details here
• Description: make -C .ci create-stack

❕ Flaky test report

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