Remove FF for environment multiple stop actions

Merged Bala Kumar requested to merge ff-removal-env-multiple-stop-action into master

What does this MR do and why?

Remove FF #358911 (closed) introduced in !84922 (diffs) as we observe it is stable in production.

Will follow up with a seperate MR for documentation change

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

Edited by Bala Kumar