Revert "[Feature] Start/stop monitoring server based on monitoring config"

[michalpristas]

Reverts #3492

due to cloud scenario where they have disabled monitoring but expect server to be running

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Pinging @elastic/elastic-agent-control-plane (Team:Elastic-Agent-Control-Plane)

[elasticmachine]

Pinging @elastic/elastic-agent (Team:Elastic-Agent)

[pierrehilbert]

Don't forget to reopen the issue please

[elasticmachine]

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• Start Time: 2023-10-11T07:48:37.989+0000

• Duration: 28 min 47 sec

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Test	Results
Failed	0
Passed	6489
Skipped	59
Total	6548

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🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	98.78% (81/82)	👎 -0.015
Files	67.003% (199/297)	👎 -0.111
Classes	65.642% (363/553)	👎 -0.124
Methods	52.974% (1149/2169)	👎 -0.059
Lines	38.581% (13135/34045)	👎 -0.024
Conditionals	100.0% (0/0)	💚

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[cmacknz]

Test failure is unrelated, force merging.