[Remove] Remove files relating to managed respawn system

[empollak]

None of these files were referenced anywhere outside of themselves, so this should be safe. Still worth testing though. Finishes up the initial cleaning done in #298

Pull Request Description

When merged this pull request will:

• Delete everything related to the managed respawn system

Release Notes

Cleaned up old unused files related to an alternate "managed" respawn system.

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[Bubbus]

rip 🫡