[Serverless]: Security - Visual event analyzer and CCS warning advanced settings not in serverless

[nastasha-solomon]

Fixes #6017

Previews:

• Visual event analyzer - Removed the tip about excluding cold and frozen tier data from analyzer queries.
• Advanced settings - Removes docs for the following advanced settings, which were removed in Serverless via [Security Solution][Detection Engine] removes unsupported adv settings options for Serverless kibana#194108:
  • securitySolution:excludeColdAndFrozenTiersInAnalyzer
  • securitySolution:enableCcsWarning

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