CLOUDP-334949: Remove scripts and update documentation about SSDL process

[helderjs]

Summary

Proof of Work

Checklist

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[josvazg]

Unfortunately it is not that easy. We can remove the storage to S3, but not uploading to Kondukto, taht still needs to happen and needs to be manual.

Basically here store-augmented-sboms can go away, but the rest need to remain. And the instructions for those need to be preserved as well.

[josvazg]

Talked offline: if the augmentation and upload to Kondukto has been automated by the new release process elsewhere, it is fine to proceed with this removal and the manual instructions clean-up. Let's just double check that is the case first.