Add the commit id of removed code to old-code.adoc
Add the commit id of removed code to old-code.adoc

This way, if we need any code in the future it's a matter of a
git-checkout with the commit id, if history is rewritten we can search
by name, etc.

RedCraneStudio/redcrane-engine,RedCraneStudio/redcrane-engine,RedCraneStudio/redcrane-engine,RedCraneStudio/redcrane-engine