It is only used in one spot, in logging, ~~in an unstable new CLI command (despite being much older a function~). The behavior is a bit obscure --- I don't think anyone cares about a special case for MD5 hashes any more.~~

I think we can remove this, and do are new usual thing of SRI / base64 hashing for that log statement instead.

We can just inline it into that one spot, where it is needed for back-compat (perhaps).