[stack monitoring] Remove stack monitoring data streams beta flag

[klacabane]

Summary

Part of #8040

Remove stack monitoring data streams beta flag from elasticsearch, kibana and logstash packages

[elasticmachine]

💚 Build Succeeded

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Build stats

• Start Time: 2023-11-14T12:37:07.815+0000

• Duration: 85 min 14 sec

Test stats 🧪

Test	Results
Failed	0
Passed	136
Skipped	1
Total	137

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[elasticmachine]

🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (9/9)	💚
Files	100.0% (19/19)	💚 3.81
Classes	100.0% (19/19)	💚 3.81
Methods	92.453% (196/212)	👎 -0.004
Lines	90.456% (834/922)	👍 1.641
Conditionals	100.0% (0/0)	💚

[klacabane]

/test

[klacabane]

/test

[botelastic]

Hi! We just realized that we haven't looked into this PR in a while. We're sorry! We're labeling this issue as Stale to make it hit our filters and make sure we get back to it as soon as possible. In the meantime, it'd be extremely helpful if you could take a look at it as well and confirm its relevance. A simple comment with a nice emoji will be enough :+1. Thank you for your contribution!

[klacabane]

/test

[klacabane]

/test

[klacabane]

/test

[miltonhultgren]

Nit: Should it be "Stack Monitoring"?

[klacabane]

/test

[elasticmachine]

Package elasticsearch - 1.11.0 containing this change is available at https://epr.elastic.co/search?package=elasticsearch

[elasticmachine]

Package kibana - 2.5.0 containing this change is available at https://epr.elastic.co/search?package=kibana

[elasticmachine]

Package logstash - 2.4.0 containing this change is available at https://epr.elastic.co/search?package=logstash