[8.0](backport #28869) Remove deprecated spool queue from Beats

[mergify]

This is an automatic backport of pull request #28869 done by Mergify.

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• Start Time: 2021-11-23T16:39:02.432+0000

• Duration: 240 min 27 sec

• Commit: 2123fd1

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Test	Results
Failed	0
Passed	48558
Skipped	4296
Total	52854

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